List of EC numbers (EC 4)
Encyclopedia
This list contains a list of EC numbers for the fourth group, EC 4, lyases, placed in numerical order as determined by the Nomenclature Committee of the International Union of Biochemistry and Molecular Biology
International Union of Biochemistry and Molecular Biology
The International Union of Biochemistry and Molecular Biology is an international non-governmental organisation concerned with biochemistry and molecular biology...

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EC 4.1.1: Carboxy-Lyases
Carboxy-lyases
Carboxy-lyases, also known as decarboxylases, are carbon–carbon lyases that add or remove a carboxyl group from organic compounds.These enzymes catalyze the decarboxylation of amino acids, beta-keto acids and alpha-keto acids....

: pyruvate decarboxylase
Pyruvate decarboxylase
Not to be confused with pyruvate dehydrogenase, the enzyme which catalyses the link reaction.Pyruvate decarboxylase is a homotetrameric enzyme that catalyses the decarboxylation of pyruvic acid to acetaldehyde and carbon dioxide in the cytoplasm. It is also called 2-oxo-acid carboxylase,...

: oxalate decarboxylase
Oxalate decarboxylase
In enzymology, an oxalate decarboxylase is an enzyme that catalyzes the chemical reactionThus, the two substrates of this enzyme are oxalate and H+, whereas its two products are formate and CO2....

: oxaloacetate decarboxylase
Oxaloacetate decarboxylase
Oxaloacetate decarboxylase is a carboxy-lyase involved in the conversion of oxaloacetate into pyruvate.It is categorized under ....

: acetoacetate decarboxylase
Acetoacetate decarboxylase
- Activity in bacteria :In certain bacteria, acetoacetate decarboxylase is involved in solventogenesis, a process by which the butyric and acetic acid products of classical sugar fermentation are oxidized into acetone and butanol...

: acetolactate decarboxylase
Acetolactate decarboxylase
In enzymology, an acetolactate decarboxylase is an enzyme that catalyzes the chemical reaction-2-hydroxy-2-methyl-3-oxobutanoate \rightleftharpoons -2-acetoin + CO2...

: aconitate decarboxylase
Aconitate decarboxylase
In enzymology, an aconitate decarboxylase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, cis-aconitate, and two products, itaconate and CO2....

: benzoylformate decarboxylase
Benzoylformate decarboxylase
In enzymology, a benzoylformate decarboxylase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, benzoylformate, and two products, benzaldehyde and CO2....

: oxalyl-CoA decarboxylase
Oxalyl-CoA decarboxylase
In enzymology, an oxalyl-CoA decarboxylase is an enzyme primarily produced by the gastrointestinal bacterium Oxalobacter formigenes that catalyzes the chemical reaction...

: malonyl-CoA decarboxylase
Malonyl-CoA decarboxylase
Malonyl-CoA decarboxylase is an enzyme associated with Malonyl-CoA decarboxylase deficiency.It catalyzes the conversion of malonyl-CoA into acetyl-CoA and carbon dioxide.To some degree, it reverses the action of Acetyl-CoA carboxylase....

: deleted, included in EC 4.1.1.12: aspartate 1-decarboxylase
Aspartate 1-decarboxylase
In enzymology, an aspartate 1-decarboxylase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, L-aspartate, and two products, beta-alanine and CO2....

: aspartate 4-decarboxylase
Aspartate 4-decarboxylase
In enzymology, an aspartate 4-decarboxylase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, L-aspartate, and two products, L-alanine and CO2....

: deleted: valine decarboxylase
Valine decarboxylase
In enzymology, a valine decarboxylase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, L-valine, and two products, 2-methylpropanamine and CO2....

: glutamate decarboxylase
Glutamate decarboxylase
Glutamate decarboxylase or glutamic acid decarboxylase is an enzyme that catalyzes the decarboxylation of glutamate to GABA and CO2. GAD uses PLP as a cofactor. The reaction proceeds as follows:...

: hydroxyglutamate decarboxylase
Hydroxyglutamate decarboxylase
In enzymology, a hydroxyglutamate decarboxylase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, 3-hydroxy-L-glutamate, and two products, 4-amino-3-hydroxybutanoate and CO2....

: ornithine decarboxylase
Ornithine decarboxylase
The enzyme ornithine decarboxylase catalyzes the decarboxylation of ornithine to form putrescine. This reaction is the committed step in polyamine synthesis. In humans, this protein has 461 amino acids and forms a homodimer....

: lysine decarboxylase
Lysine decarboxylase
Lysine decarboxylase is an enzyme that converts lysine to cadaverine....

: arginine decarboxylase
Arginine decarboxylase
In enzymology, an arginine decarboxylase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, L-arginine, and two products, agmatine and CO2....

: diaminopimelate decarboxylase
Diaminopimelate decarboxylase
In enzymology, a diaminopimelate decarboxylase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, meso-2,6-diaminoheptanedioate, and two products, L-lysine and CO2....

: phosphoribosylaminoimidazole carboxylase
Phosphoribosylaminoimidazole carboxylase
Phosphoribosylaminoimidazole carboxylase is an enzyme involved in nucleotide biosynthesis and in particular in purine biosynthesis...

: histidine decarboxylase
Histidine decarboxylase
Histidine decarboxylase is the enzyme that catalyzes the reaction that produces histamine from histidine with the help of vitamin B6 as follows:C6H9N3O2 → C5H9N3 + CO2...

: orotidine-5'-phosphate decarboxylase: aminobenzoate decarboxylase
Aminobenzoate decarboxylase
In enzymology, an aminobenzoate decarboxylase is an enzyme that catalyzes the chemical reactionThus, the two substrates of this enzyme are 4-aminobenzoate and 2-aminobenzoate, whereas its two products are aniline and CO2....

: tyrosine decarboxylase
Tyrosine decarboxylase
In enzymology, a tyrosine decarboxylase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, L-tyrosine, and two products, tyramine and carbon dioxide....

: deleted, included in EC 4.1.1.28: deleted, included in EC 4.1.1.28: aromatic-L-amino-acid decarboxylase: sulfoalanine decarboxylase: pantothenoylcysteine decarboxylase
Pantothenoylcysteine decarboxylase
In enzymology, a pantothenoylcysteine decarboxylase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, N--L-cysteine, and two products, pantetheine and CO2....

: phosphoenolpyruvate carboxylase
Phosphoenolpyruvate carboxylase
Phosphoenolpyruvate carboxylase is an enzyme in the family of carboxy-lyases that catalyzes the addition of bicarbonate to phosphoenolpyruvate to form the four-carbon compound oxaloacetate:This reaction is used for carbon fixation in so-called "CAM" and "C4" plants where it plays a key role in...

: phosphoenolpyruvate carboxykinase (GTP): diphosphomevalonate decarboxylase
Diphosphomevalonate decarboxylase
In enzymology, a diphosphomevalonate decarboxylase is an enzyme that catalyzes the chemical reactionThus, the two substrates of this enzyme are ATP and -5-diphosphomevalonate, whereas its 4 products are ADP, phosphate, isopentenyl diphosphate, and CO2....

: dehydro-L-gulonate decarboxylase
Dehydro-L-gulonate decarboxylase
In enzymology, a dehydro-L-gulonate decarboxylase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, 3-dehydro-L-gulonate, and two products, L-xylulose and CO2....

: UDP-glucuronate decarboxylase
UDP-glucuronate decarboxylase
In enzymology, an UDP-glucuronate decarboxylase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, UDP-D-glucuronate, and two products, UDP-D-xylose and CO2....

: phosphopantothenoylcysteine decarboxylase
Phosphopantothenoylcysteine decarboxylase
In enzymology, a phosphopantothenoylcysteine decarboxylase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, N-[-4'-phosphopantothenoyl]-L-cysteine, and two products, pantotheine 4'-phosphate and CO2....

: uroporphyrinogen decarboxylase: phosphoenolpyruvate carboxykinase (diphosphate): ribulose-bisphosphate carboxylase: hydroxypyruvate decarboxylase
Hydroxypyruvate decarboxylase
In enzymology, a hydroxypyruvate decarboxylase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, hydroxypyruvate, and two products, glycolaldehyde and CO2....

: methylmalonyl-CoA decarboxylase
Methylmalonyl-CoA decarboxylase
In enzymology, a methylmalonyl-CoA decarboxylase is an enzyme that catalyzes the chemical reaction-methylmalonyl-CoA \rightleftharpoons propanoyl-CoA + CO2Hence, this enzyme has one substrate, -methylmalonyl-CoA, and two products, propanoyl-CoA and CO2....

: carnitine decarboxylase
Carnitine decarboxylase
In enzymology, a carnitine decarboxylase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, carnitine, and two products, 2-methylcholine and CO2....

: phenylpyruvate decarboxylase
Phenylpyruvate decarboxylase
In enzymology, a phenylpyruvate decarboxylase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, phenylpyruvate, and two products, phenylacetaldehyde and CO2....

: 4-carboxymuconolactone decarboxylase
4-carboxymuconolactone decarboxylase
In enzymology, a 4-carboxymuconolactone decarboxylase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, 2-carboxy-2,5-dihydro-5-oxofuran-2-acetate, and two products, 4,5-dihydro-5-oxofuran-2-acetate and CO2....

: aminocarboxymuconate-semialdehyde decarboxylase
Aminocarboxymuconate-semialdehyde decarboxylase
In enzymology, an aminocarboxymuconate-semialdehyde decarboxylase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, 2-amino-3-but-2-enedioate, and two products, 2-aminomuconate semialdehyde and CO2....

: o-pyrocatechuate decarboxylase
O-pyrocatechuate decarboxylase
In enzymology, an o-pyrocatechuate decarboxylase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, 2,3-dihydroxybenzoate, and two products, catechol and CO2....

: tartronate-semialdehyde synthase
Tartronate-semialdehyde synthase
In enzymology, a tartronate-semialdehyde synthase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, glyoxylate, and two products, tartronate semialdehyde and CO2....

: indole-3-glycerol-phosphate synthase
Indole-3-glycerol-phosphate synthase
In enzymology, an indole-3-glycerol-phosphate synthase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, 1--1-deoxy-D-ribulose 5-phosphate, but 3 products: 1-C--glycerol 3-phosphate, CO2, and H2O.This enzyme belongs to the family of lyases, to be specific, the...

: phosphoenolpyruvate carboxykinase (ATP): adenosylmethionine decarboxylase
Adenosylmethionine decarboxylase
Adenosylmethionine decarboxylase is an enzyme that catalyzes the conversion of S-adenosyl methionine to S-adenosylmethioninamine.Polyamines such as spermidine and spermine are essential for cellular growth under most conditions, being implicated in a large number of cellular processes including...

: 3-hydroxy-2-methylpyridine-4,5-dicarboxylate 4-decarboxylase
3-hydroxy-2-methylpyridine-4,5-dicarboxylate 4-decarboxylase
In enzymology, a 3-hydroxy-2-methylpyridine-4,5-dicarboxylate 4-decarboxylase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, 3-hydroxy-2-methylpyridine-4,5-dicarboxylate, and two products, 3-hydroxy-2-methylpyridine-5-carboxylate and CO2.This enzyme belongs...

: 6-methylsalicylate decarboxylase
6-methylsalicylate decarboxylase
In enzymology, a 6-methylsalicylate decarboxylase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, 6-methylsalicylate, and two products, 3-cresol and CO2....

: phenylalanine decarboxylase
Phenylalanine decarboxylase
In enzymology, a phenylalanine decarboxylase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, L-phenylalanine, and two products, phenylethylamine and CO2....

: dihydroxyfumarate decarboxylase
Dihydroxyfumarate decarboxylase
In enzymology, a dihydroxyfumarate decarboxylase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, dihydroxyfumarate, and two products, tartronate semialdehyde and CO2....

: 4,5-dihydroxyphthalate decarboxylase
4,5-dihydroxyphthalate decarboxylase
In enzymology, a 4,5-dihydroxyphthalate decarboxylase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, 4,5-dihydroxyphthalate, and two products, 3,4-dihydroxybenzoate and CO2....

: 3-oxolaurate decarboxylase
3-oxolaurate decarboxylase
In enzymology, a 3-oxolaurate decarboxylase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, 3-oxododecanoate, and two products, 2-undecanone and CO2....

: methionine decarboxylase
Methionine decarboxylase
In enzymology, a methionine decarboxylase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, L-methionine, and two products, 3-methylthiopropanamine and CO2....

: orsellinate decarboxylase
Orsellinate decarboxylase
In enzymology, an orsellinate decarboxylase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, 2,4-dihydroxy-6-methylbenzoate, and two products, orcinol and CO2....

: gallate decarboxylase
Gallate decarboxylase
In enzymology, a gallate decarboxylase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, 3,4,5-trihydroxybenzoate, and two products, pyrogallol and CO2....

: stipitatonate decarboxylase
Stipitatonate decarboxylase
In enzymology, a stipitatonate decarboxylase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, stipitatonate, and two products, stipitatate and CO2....

: 4-hydroxybenzoate decarboxylase
4-hydroxybenzoate decarboxylase
In enzymology, a 4-hydroxybenzoate decarboxylase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, 4-hydroxybenzoate, and two products, phenol and CO2....

: gentisate decarboxylase
Gentisate decarboxylase
In enzymology, a gentisate decarboxylase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, 2,5-dihydroxybenzoate, and two products, hydroquinone and CO2....

: protocatechuate decarboxylase
Protocatechuate decarboxylase
In enzymology, a protocatechuate decarboxylase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, 3,4-dihydroxybenzoate, and two products, catechol and CO2....

: 2,2-dialkylglycine decarboxylase (pyruvate)
2,2-dialkylglycine decarboxylase (pyruvate)
In enzymology, a 2,2-dialkylglycine decarboxylase is an enzyme that catalyzes the chemical reactionThus, the two substrates of this enzyme are 2,2-dialkylglycine and pyruvate, whereas its 3 products are dialkyl ketone, CO2, and L-alanine....

: phosphatidylserine decarboxylase
Phosphatidylserine decarboxylase
In enzymology, a phosphatidylserine decarboxylase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, phosphatidyl-L-serine, and two products, phosphatidylethanolamine and CO2....

: uracil-5-carboxylate decarboxylase
Uracil-5-carboxylate decarboxylase
In enzymology, a uracil-5-carboxylate decarboxylase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, uracil 5-carboxylate, and two products, uracil and CO2....

: UDP-galacturonate decarboxylase
UDP-galacturonate decarboxylase
In enzymology, an UDP-galacturonate decarboxylase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, UDP-D-galacturonate, and two products, UDP-L-arabinose and CO2....

: 5-oxopent-3-ene-1,2,5-tricarboxylate decarboxylase
5-oxopent-3-ene-1,2,5-tricarboxylate decarboxylase
In enzymology, a 5-oxopent-3-ene-1,2,5-tricarboxylate decarboxylase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, 5-oxopent-3-ene-1,2,5-tricarboxylate, and two products, 2-oxohept-3-enedioate and CO2....

: 3,4-dihydroxyphthalate decarboxylase
3,4-dihydroxyphthalate decarboxylase
In enzymology, a 3,4-dihydroxyphthalate decarboxylase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, 3,4-dihydroxyphthalate, and two products, 3,4-dihydroxybenzoate and CO2....

: glutaconyl-CoA decarboxylase
Glutaconyl-CoA decarboxylase
In enzymology, a glutaconyl-CoA decarboxylase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, 4-carboxybut-2-enoyl-CoA, and two products, but-2-enoyl-CoA and CO2....

: 2-oxoglutarate decarboxylase
2-oxoglutarate decarboxylase
In enzymology, a 2-oxoglutarate decarboxylase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, 2-oxoglutarate, and two products, succinate semialdehyde and CO2....

: branched-chain-2-oxoacid decarboxylase
Branched-chain-2-oxoacid decarboxylase
In enzymology, a branched-chain-2-oxoacid decarboxylase is an enzyme that catalyzes the chemical reaction-3-methyl-2-oxopentanoate \rightleftharpoons 2-methylbutanal + CO2...

: tartrate decarboxylase
Tartrate decarboxylase
In enzymology, a tartrate decarboxylase is an enzyme that catalyzes the chemical reaction-tartrate \rightleftharpoons D-glycerate + CO2Hence, this enzyme has one substrate, -tartrate, and two products, D-glycerate and CO2....

: indolepyruvate decarboxylase
Indolepyruvate decarboxylase
In enzymology, an indolepyruvate decarboxylase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, 3-pyruvate, and two products, 2-acetaldehyde and CO2....

: 5-guanidino-2-oxopentanoate decarboxylase
5-guanidino-2-oxopentanoate decarboxylase
In enzymology, a 5-guanidino-2-oxopentanoate decarboxylase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, 5-guanidino-2-oxo-pentanoate, and two products, 4-guanidinobutanal and CO2....

: arylmalonate decarboxylase
Arylmalonate decarboxylase
In enzymology, an arylmalonate decarboxylase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, 2-aryl-2-methylmalonate, and two products, 2-arylpropanoate and CO2....

: 4-oxalocrotonate decarboxylase
4-oxalocrotonate decarboxylase
In enzymology, a 4-oxalocrotonate decarboxylase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, 4-oxalocrotonate, and two products, 2-oxopent-4-enoate and CO2....

: acetylenedicarboxylate decarboxylase
Acetylenedicarboxylate decarboxylase
In enzymology, an acetylenedicarboxylate decarboxylase is an enzyme that catalyzes the chemical reactionThus, the two substrates of this enzyme are acetylenedicarboxylate and H2O, whereas its two products are pyruvate and CO2....

: sulfopyruvate decarboxylase
Sulfopyruvate decarboxylase
In enzymology, a sulfopyruvate decarboxylase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, 3-sulfopyruvate, and two products, 2-sulfoacetaldehyde and CO2....

: 4-hydroxyphenylpyruvate decarboxylase
4-hydroxyphenylpyruvate decarboxylase
In enzymology, a 4-hydroxyphenylpyruvate decarboxylase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, 4-hydroxyphenylpyruvate, and two products, 4-hydroxyphenylacetaldehyde and CO2....

: threonine-phosphate decarboxylase
Threonine-phosphate decarboxylase
In enzymology, a threonine-phosphate decarboxylase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, L-threonine O-3-phosphate, and two products, -1-aminopropan-2-yl phosphate and CO2....

: phosphonopyruvate decarboxylase
Phosphonopyruvate decarboxylase
In enzymology, a phosphonopyruvate decarboxylase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, 3-phosphonopyruvate, and two products, 2-phosphonoacetaldehyde and CO2....

: 4-hydroxyphenylacetate decarboxylase
4-hydroxyphenylacetate decarboxylase
In enzymology, a 4-hydroxyphenylacetate decarboxylase is an enzyme that catalyzes the chemical reactionacetate + H+ \rightleftharpoons 4-methylphenol + CO2...

: D-dopachrome decarboxylase
D-dopachrome decarboxylase
In enzymology, a D-dopachrome decarboxylase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, D-dopachrome, and two products, 5,6-dihydroxyindole and CO2....

: 3-dehydro-L-gulonate-6-phosphate decarboxylase
3-dehydro-L-gulonate-6-phosphate decarboxylase
In enzymology, a 3-dehydro-L-gulonate-6-phosphate decarboxylase is an enzyme that catalyzes the chemical reactionThus, the two substrates of this enzyme are 3-dehydro-L-gulonate 6-phosphate and H+, whereas its two products are L-xylulose 5-phosphate and CO2....


EC 4.1.2: Aldehyde-Lyases

: deleted, included in EC 4.1.3.16: ketotetrose-phosphate aldolase
Ketotetrose-phosphate aldolase
In enzymology, a ketotetrose-phosphate aldolase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, erythrulose 1-phosphate, and two products, glycerone phosphate and formaldehyde....

: deleted: deoxyribose-phosphate aldolase
Deoxyribose-phosphate aldolase
In enzymology, a deoxyribose-phosphate aldolase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, 2-deoxy-D-ribose 5-phosphate, and two products, D-glyceraldehyde 3-phosphate and acetaldehyde....

: threonine aldolase
Threonine aldolase
In enzymology, a threonine aldolase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, L-threonine, and two products, glycine and acetaldehyde....

: deleted: deleted, included in EC 4.1.2.13: deleted: phosphoketolase
Phosphoketolase
In enzymology, a phosphoketolase is an enzyme that catalyzes the chemical reactionThus, the two substrates of this enzyme are D-xylulose 5-phosphate and phosphate, whereas its 3 products are acetyl phosphate, D-glyceraldehyde 3-phosphate, and H2O....

: mandelonitrile lyase
Mandelonitrile lyase
In enzymology, a mandelonitrile lyase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, mandelonitrile, and two products, cyanide and benzaldehyde....

: hydroxymandelonitrile lyase
Hydroxymandelonitrile lyase
In enzymology, a hydroxymandelonitrile lyase is an enzyme that catalyzes the chemical reaction-4-hydroxymandelonitrile \rightleftharpoons cyanide + 4-hydroxybenzaldehyde...

: 2-dehydropantoate aldolase
2-dehydropantoate aldolase
In enzymology, a 2-dehydropantoate aldolase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, 2-dehydropantoate, and two products, 3-methyl-2-oxobutanoate and formaldehyde....

: fructose-bisphosphate aldolase
Fructose-bisphosphate aldolase
In molecular biology, fructose-bisphosphate aldolase , is a glycolytic enzyme that catalyses the reversible aldol cleavage or condensation of fructose-1,6-bisphosphate into dihydroxyacetone-phosphate and glyceraldehyde 3-phosphate...

: 2-dehydro-3-deoxy-phosphogluconate aldolase
2-dehydro-3-deoxy-phosphogluconate aldolase
In enzymology, a 2-dehydro-3-deoxy-phosphogluconate aldolase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, 2-dehydro-3-deoxy-D-gluconate 6-phosphate, and two products, pyruvate and D-glyceraldehyde 3-phosphate....

: now EC 2.5.1.54: now EC 2.5.1.55: L-fuculose-phosphate aldolase
L-fuculose-phosphate aldolase
In enzymology, a L-fuculose-phosphate aldolase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, L-fuculose-1-phosphate, and two products, glycerone phosphate and -lactaldehyde....

: 2-dehydro-3-deoxy-L-pentonate aldolase
2-dehydro-3-deoxy-L-pentonate aldolase
In enzymology, a 2-dehydro-3-deoxy-L-pentonate aldolase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, 2-dehydro-3-deoxy-L-pentonate, and two products, pyruvate and glycolaldehyde....

: rhamnulose-1-phosphate aldolase
Rhamnulose-1-phosphate aldolase
In enzymology, a rhamnulose-1-phosphate aldolase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, L-rhamnulose 1-phosphate, and two products, glycerone phosphate and -lactaldehyde....

: 2-dehydro-3-deoxyglucarate aldolase
2-dehydro-3-deoxyglucarate aldolase
In enzymology, a 2-dehydro-3-deoxyglucarate aldolase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, 2-dehydro-3-deoxy-D-glucarate, and two products, pyruvate and tartronate semialdehyde....

: 2-dehydro-3-deoxy-6-phosphogalactonate aldolase
2-dehydro-3-deoxy-6-phosphogalactonate aldolase
In enzymology, a 2-dehydro-3-deoxy-6-phosphogalactonate aldolase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, 2-dehydro-3-deoxy-D-galactonate 6-phosphate, and two products, pyruvate and D-glyceraldehyde 3-phosphate....

: fructose-6-phosphate phosphoketolase
Fructose-6-phosphate phosphoketolase
In enzymology, a fructose-6-phosphate phosphoketolase is an enzyme that catalyzes the chemical reactionThus, the two substrates of this enzyme are D-fructose 6-phosphate and phosphate, whereas its 3 products are acetyl phosphate, D-erythrose 4-phosphate, and H2O.This enzyme belongs to the family...

: 3-deoxy-D-manno-octulosonate aldolase
3-deoxy-D-manno-octulosonate aldolase
In enzymology, a 3-deoxy-D-manno-octulosonate aldolase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, 3-deoxy-D-manno-octulosonate, and two products, pyruvate and D-arabinose....

: dimethylaniline-N-oxide aldolase
Dimethylaniline-N-oxide aldolase
In enzymology, a dimethylaniline-N-oxide aldolase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, N,N-dimethylaniline N-oxide, and two products, N-methylaniline and formaldehyde....

: dihydroneopterin aldolase
Dihydroneopterin aldolase
In enzymology, a dihydroneopterin aldolase is an enzyme that catalyzes the chemical reactionThus, the substrate of this enzyme is 2-amino-4-hydroxy-6--7,8-dihydropteridine, whereas its two products are 2-amino-4-hydroxy-6-hydroxymethyl-7,8-dihydropteridine and glycolaldehyde.This enzyme belongs...

: phenylserine aldolase
Phenylserine aldolase
In enzymology, a phenylserine aldolase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, L-threo-3-phenylserine, and two products, glycine and benzaldehyde....

: sphinganine-1-phosphate aldolase
Sphinganine-1-phosphate aldolase
In enzymology, a sphinganine-1-phosphate aldolase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, sphinganine 1-phosphate, and two products, phosphoethanolamine and palmitaldehyde....

: 2-dehydro-3-deoxy-D-pentonate aldolase
2-dehydro-3-deoxy-D-pentonate aldolase
In enzymology, a 2-dehydro-3-deoxy-D-pentonate aldolase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, 2-dehydro-3-deoxy-D-pentonate, and two products, pyruvate and glycolaldehyde....

: 5-dehydro-2-deoxyphosphogluconate aldolase
5-dehydro-2-deoxyphosphogluconate aldolase
In enzymology, a 5-dehydro-2-deoxyphosphogluconate aldolase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, 5-dehydro-2-deoxy-D-gluconate 6-phosphate, and two products, glycerone phosphate and malonate semialdehyde....

: 17a-hydroxyprogesterone aldolase: deleted, included in EC 4.1.3.16: trimethylamine-oxide aldolase
Trimethylamine-oxide aldolase
In enzymology, a trimethylamine-oxide aldolase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, trimethylamine N-oxide, and two products, dimethylamine and formaldehyde....

: fucosterol-epoxide lyase
Fucosterol-epoxide lyase
In enzymology, a fucosterol-epoxide lyase is an enzyme that catalyzes the chemical reaction-fucosterol epoxide \rightleftharpoons desmosterol + acetaldehyde...

: 4-(2-carboxyphenyl)-2-oxobut-3-enoate aldolase
4-(2-carboxyphenyl)-2-oxobut-3-enoate aldolase
In enzymology, a 4--2-oxobut-3-enoate aldolase is an enzyme that catalyzes the chemical reaction-4--2-oxobut-3-enoate + H2O \rightleftharpoons 2-formylbenzoate + pyruvate...

: propioin synthase
Propioin synthase
In enzymology, a propioin synthase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, 4-hydroxy-3-hexanone, and one product, propanal....

: lactate aldolase
Lactate aldolase
In enzymology, a lactate aldolase is an enzyme that catalyzes the chemical reaction-lactate \rightleftharpoons formate + acetaldehydeHence, this enzyme has one substrate, -lactate, and two products, formate and acetaldehyde....

: hydroxynitrilase
Hydroxynitrilase
In enzymology, a hydroxynitrilase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, acetone cyanohydrin, and two products, cyanide and acetone....

: benzoin aldolase
Benzoin aldolase
In enzymology, a benzoin aldolase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, 2-hydroxy-1,2-diphenylethanone, and one product, benzaldehyde....

: Deleted, same as EC 4.1.2.37: tagatose-bisphosphate aldolase
Tagatose-bisphosphate aldolase
In enzymology, a tagatose-bisphosphate aldolase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, D-tagatose 1,6-bisphosphate, and two products, glycerone phosphate and D-glyceraldehyde 3-phosphate....

: vanillin synthase
Vanillin synthase
In enzymology, a vanillin synthase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, 3-hydroxy-3-propanoyl-CoA, and two products, vanillin and acetyl-CoA....


EC 4.1.3: Oxo-Acid-Lyases

: isocitrate lyase
Isocitrate lyase
Isocitrate lyase , or ICL, is an enzyme in the glyoxylate cycle that catalyzes the cleavage of isocitrate to succinate and glyoxylate. Together with malate synthase, it bypasses the two decarboxylation steps of the tricarboxylic acid cycle and is used by bacteria, fungi, and plants.The systematic...

: now EC 2.3.3.9: N-acetylneuraminate lyase
N-acetylneuraminate lyase
In enzymology, a N-acetylneuraminate lyase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, N-acetylneuraminate, and two products, N-acetyl-D-mannosamine and pyruvate....

: hydroxymethylglutaryl-CoA lyase: now EC 2.3.3.10: citrate (pro-3S)-lyase
Citrate (pro-3S)-lyase
In enzymology, a citrate -lyase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, citrate, and two products, acetate and oxaloacetate....

: now EC 2.3.3.1: now EC 2.3.3.8: now EC 2.3.3.11: now EC 2.3.3.7: now EC 2.3.3.12: now EC 2.3.3.13: oxalomalate lyase
Oxalomalate lyase
In enzymology, an oxalomalate lyase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, 3-oxalomalate, and two products, oxaloacetate and glyoxylate....

: 3-hydroxyaspartate aldolase
3-hydroxyaspartate aldolase
In enzymology, a 3-hydroxyaspartate aldolase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, erythro-3-hydroxy-Ls-aspartate, and two products, glycine and glyoxylate....

: now EC 2.2.1.5: 4-hydroxy-2-oxoglutarate aldolase
4-hydroxy-2-oxoglutarate aldolase
In enzymology, a 4-hydroxy-2-oxoglutarate aldolase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, 4-hydroxy-2-oxoglutarate, and two products, pyruvate and glyoxylate....

: 4-hydroxy-4-methyl-2-oxoglutarate aldolase
4-hydroxy-4-methyl-2-oxoglutarate aldolase
In enzymology, a 4-hydroxy-4-methyl-2-oxoglutarate aldolase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, 4-hydroxy-4-methyl-2-oxoglutarate, and one product, pyruvate....

: now EC 2.2.1.6: now EC 2.5.1.56: now EC 2.5.1.57: now EC 2.3.3.14: citramalate lyase
Citramalate lyase
In enzymology, a citramalate lyase is an enzyme that catalyzes the chemical reaction-2-hydroxy-2-methylbutanedioate \rightleftharpoons acetate + pyruvate...

: now EC 2.3.3.2: malyl-CoA lyase
Malyl-CoA lyase
In enzymology, a malyl-CoA lyase is an enzyme that catalyzes the chemical reaction-3-carboxy-3-hydroxypropanoyl-CoA \rightleftharpoons acetyl-CoA + glyoxylate...

: citramalyl-CoA lyase
Citramalyl-CoA lyase
In enzymology, a citramalyl-CoA lyase is an enzyme that catalyzes the chemical reaction-citramalyl-CoA \rightleftharpoons acetyl-CoA + pyruvateHence, this enzyme has one substrate, -citramalyl-CoA, and two products, acetyl-CoA and pyruvate....

: 3-hydroxy-3-isohexenylglutaryl-CoA lyase
3-hydroxy-3-isohexenylglutaryl-CoA lyase
In enzymology, a 3-hydroxy-3-isohexenylglutaryl-CoA lyase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, 3-hydroxy-3-glutaryl-CoA, and two products, 7-methyl-3-oxooct-6-enoyl-CoA and acetate....

: anthranilate synthase
Anthranilate synthase
In enzymology, an anthranilate synthase is an enzyme that catalyzes the chemical reactionThus, the two substrates of this enzyme are chorismate and L-glutamine, whereas its 3 products are anthranilate, pyruvate, and L-glutamate....

: now EC 2.3.3.3: now EC 2.3.3.4: methylisocitrate lyase
Methylisocitrate lyase
In enzymology, a methylisocitrate lyase is an enzyme that catalyzes the chemical reaction-3-hydroxybutane-1,2,3-tricarboxylate \rightleftharpoons pyruvate + succinate...

: now EC 2.3.3.5: 2,3-dimethylmalate lyase
2,3-dimethylmalate lyase
In enzymology, a 2,3-dimethylmalate lyase is an enzyme that catalyzes the chemical reaction-2,3-dimethylmalate \rightleftharpoons propanoate + pyruvate...

: now EC 2.3.3.6: citryl-CoA lyase
Citryl-CoA lyase
In enzymology, a citryl-CoA lyase is an enzyme that catalyzes the chemical reaction-citryl-CoA \rightleftharpoons acetyl-CoA + oxaloacetateHence, this enzyme has one substrate, -citryl-CoA, and two products, acetyl-CoA and oxaloacetate....

: (1-hydroxycyclohexan-1-yl)acetyl-CoA lyase
(1-hydroxycyclohexan-1-yl)acetyl-CoA lyase
In enzymology, a acetyl-CoA lyase is an enzyme that catalyzes the chemical reactionacetyl-CoA \rightleftharpoons acetyl-CoA + cyclohexanone...

: naphthoate synthase
Naphthoate synthase
In enzymology, a naphthoate synthase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, o-succinylbenzoyl-CoA, and two products, CoA and 1,4-dihydroxy-2-naphthoate....

: now EC 2.2.1.7: aminodeoxychorismate lyase
Aminodeoxychorismate lyase
In enzymology, an aminodeoxychorismate lyase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, 4-amino-4-deoxychorismate, and two products, 4-aminobenzoate and pyruvate....


EC 4.1.99: Other Carbon-Carbon Lyases

: tryptophanase
Tryptophanase
In enzymology, a tryptophanase is an enzyme that catalyzes the chemical reactionThus, the two substrates of this enzyme are L-tryptophan and H2O, whereas its 3 products are indole, pyruvate, and NH3....

: tyrosine phenol-lyase
Tyrosine phenol-lyase
In enzymology, a tyrosine phenol-lyase is an enzyme that catalyzes the chemical reactionThus, the two substrates of this enzyme are L-tyrosine and H2O, whereas its 3 products are phenol, pyruvate, and NH3....

: deoxyribodipyrimidine photo-lyase
Deoxyribodipyrimidine photo-lyase
In enzymology, a deoxyribodipyrimidine photo-lyase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, cyclobutadipyrimidine , and one product, pyrimidine residues ....

: now EC 3.5.99.7: octadecanal decarbonylase
Octadecanal decarbonylase
In enzymology, an octadecanal decarbonylase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, octadecanal, and two products, heptadecane and CO....

: now EC 4.2.3.6: now EC 4.2.3.9: now EC 4.2.3.14: now EC 4.2.3.15: now EC 4.2.3.16: benzylsuccinate synthase
Benzylsuccinate synthase
In enzymology, a benzylsuccinate synthase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, benzylsuccinate, and two products, toluene and fumarate....


EC 4.2.1: Hydro-Lyases

: carbonate dehydratase: fumarate hydratase: aconitate hydratase: citrate dehydratase
Citrate dehydratase
In enzymology, a citrate dehydratase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, citrate, and two products, cis-aconitate and H2O....

: arabinonate dehydratase
Arabinonate dehydratase
In enzymology, an arabinonate dehydratase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, D-arabinonate, and two products, 2-dehydro-3-deoxy-D-arabinonate and H2O....

: galactonate dehydratase
Galactonate dehydratase
In enzymology, a galactonate dehydratase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, D-galactonate, and two products, 2-dehydro-3-deoxy-D-galactonate and H2O....

: altronate dehydratase
Altronate dehydratase
In enzymology, an altronate dehydratase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, D-altronate, and two products, 2-dehydro-3-deoxy-D-gluconate and H2O....

: mannonate dehydratase
Mannonate dehydratase
In enzymology, a mannonate dehydratase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, D-mannonate, and two products, 2-dehydro-3-deoxy-D-gluconate and H2O....

: dihydroxy-acid dehydratase
Dihydroxy-acid dehydratase
In enzymology, a dihydroxy-acid dehydratase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, 2,3-dihydroxy-3-methylbutanoate, and two products, 3-methyl-2-oxobutanoate and H2O....

: 3-dehydroquinate dehydratase
3-dehydroquinate dehydratase
In enzymology, a 3-dehydroquinate dehydratase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, 3-dehydroquinate, and two products, 3-dehydroshikimate and H2O....

: phosphopyruvate hydratase
Phosphopyruvate hydratase
In enzymology, a phosphopyruvate hydratase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, 2-phospho-D-glycerate, and two products, phosphoenolpyruvate and H2O....

: phosphogluconate dehydratase
Phosphogluconate dehydratase
In enzymology, a phosphogluconate dehydratase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, 6-phospho-D-gluconate, and two products, 2-dehydro-3-deoxy-6-phospho-D-gluconate and H2O....

: now EC 4.3.1.17: now EC 4.3.1.18: now EC 4.4.1.1: now EC 4.3.1.19: enoyl-CoA hydratase
Enoyl-CoA hydratase
Enoyl-CoA hydratase is an enzyme that hydrates the double bond between the second and third carbons on acyl-CoA. This enzyme, also known as crotonase, is essential to metabolizing fatty acids to produce both acetyl CoA and energy. Note the crystal structure at right of enoyl-coa hydratase from a...

: methylglutaconyl-CoA hydratase
Methylglutaconyl-CoA hydratase
Methylglutaconyl-CoA hydratase is an enzyme associated with 3-Methylglutaconic aciduria....

: imidazoleglycerol-phosphate dehydratase
Imidazoleglycerol-phosphate dehydratase
In enzymology, an imidazoleglycerol-phosphate dehydratase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, D-erythro-1-glycerol 3-phosphate, and two products, 3--2-oxopropyl phosphate and H2O.This enzyme belongs to the family of lyases, specifically the...

: tryptophan synthase
Tryptophan synthase
Tryptophan synthase or tryptophan synthetase is an enzyme that catalyzes the final two steps in the biosynthesis of tryptophan. It is commonly found in Eubacteria, Archaebacteria, Protista, Fungi, and Plantae. However, it is absent from animalia. It is typically found as an α2β2 tetramer...

: now EC 4.2.1.22: cystathionine b-synthase: deleted: porphobilinogen synthase
Porphobilinogen synthase
Porphobilinogen synthase synthesizes porphobilinogen through the asymmetric condensation of two molecules of aminolevulinic acid...

: L-arabinonate dehydratase
L-arabinonate dehydratase
In enzymology, a L-arabinonate dehydratase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, L-arabinonate, and two products, 2-dehydro-3-deoxy-L-arabinonate and H2O....

: now EC 4.3.1.21: acetylenecarboxylate hydratase
Acetylenecarboxylate hydratase
In enzymology, an acetylenecarboxylate hydratase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, 3-oxopropanoate, and two products, propynoate and H2O....

: propanediol dehydratase
Propanediol dehydratase
In enzymology, a propanediol dehydratase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, 1,2-propanediol, and two products, propanal and H2O....

: now EC 4.99.1.6: glycerol dehydratase
Glycerol dehydratase
In enzymology, a glycerol dehydratase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, glycerol, and two products, 3-hydroxypropanal and H2O....

: maleate hydratase
Maleate hydratase
In enzymology, a maleate hydratase is an enzyme that catalyzes the chemical reaction-malate \rightleftharpoons maleate + H2OHence, this enzyme has one substrate, -malate, and two products, maleate and H2O....

: L(+)-tartrate dehydratase
L(+)-tartrate dehydratase
In enzymology, a L-tartrate dehydratase is an enzyme that catalyzes the chemical reaction-tartrate \rightleftharpoons oxaloacetate + H2OHence, this enzyme has one substrate, -tartrate, and two products, oxaloacetate and H2O....

: 3-isopropylmalate dehydratase
3-isopropylmalate dehydratase
3-Isopropylmalate dehydratase is an aconitase homologue....

: (S)-2-methylmalate dehydratase
(S)-2-methylmalate dehydratase
In enzymology, a -2-methylmalate dehydratase is an enzyme that catalyzes the chemical reaction-2-methylmalate \rightleftharpoons 2-methylfumarate + H2OHence, this enzyme has one substrate, -2-methylmalate, and two products, 2-methylfumarate and H2O....

: (R)-2-methylmalate dehydratase
(R)-2-methylmalate dehydratase
In enzymology, a -2-methylmalate dehydratase is an enzyme that catalyzes the chemical reaction-2-methylmalate \rightleftharpoons 2-methylmaleate + H2OHence, this enzyme has one substrate, -2-methylmalate, and two products, 2-methylmaleate and H2O....

: homoaconitate hydratase
Homoaconitate hydratase
In enzymology, a homoaconitate hydratase is an enzyme that catalyzes the chemical reaction-1-hydroxybutane-1,2,4-tricarboxylate \rightleftharpoons -but-1-ene-1,2,4-tricarboxylate + H2O...

: now EC 3.3.2.4: now EC 4.3.1.20: gluconate dehydratase
Gluconate dehydratase
In enzymology, a gluconate dehydratase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, D-gluconate, and two products, 2-dehydro-3-deoxy-D-gluconate and H2O....

: glucarate dehydratase
Glucarate dehydratase
In enzymology, a glucarate dehydratase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, D-glucarate, and two products, 5-dehydro-4-deoxy-D-glucarate and H2O....

: 5-dehydro-4-deoxyglucarate dehydratase
5-dehydro-4-deoxyglucarate dehydratase
In enzymology, a 5-dehydro-4-deoxyglucarate dehydratase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, 5-dehydro-4-deoxy-D-glucarate, but 3 products: 2,5-dioxopentanoate, H2O, and CO2.-Enzyme class:...

: galactarate dehydratase
Galactarate dehydratase
In enzymology, a galactarate dehydratase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, D-galactarate, and two products, 5-dehydro-4-deoxy-D-glucarate and H2O....

: 2-dehydro-3-deoxy-L-arabinonate dehydratase
2-dehydro-3-deoxy-L-arabinonate dehydratase
In enzymology, a 2-dehydro-3-deoxy-L-arabinonate dehydratase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, 2-dehydro-3-deoxy-L-arabinonate, and two products, 2,5-dioxopentanoate and H2O....

: myo-inosose-2 dehydratase
Myo-inosose-2 dehydratase
In enzymology, a myo-inosose-2 dehydratase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, 2,4,6/3,5-pentahydroxycyclohexanone, and two products, 3,5/4-trihydroxycyclohexa-1,2-dione and H2O....

: CDP-glucose 4,6-dehydratase
CDP-glucose 4,6-dehydratase
In the field of enzymology, a CDP-glucose 4,6-dehydratase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, CDP-glucose, and two products, CDP-4-dehydro-6-deoxy-D-glucose and H2O....

: dTDP-glucose 4,6-dehydratase
DTDP-glucose 4,6-dehydratase
In enzymology, a dTDP-glucose 4,6-dehydratase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, dTDP-glucose, and two products, dTDP-4-dehydro-6-deoxy-D-glucose and H2O....

: GDP-mannose 4,6-dehydratase
GDP-mannose 4,6-dehydratase
In enzymology, a GDP-mannose 4,6-dehydratase is an mannosyltransferase enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, GDP-mannose, and two products, GDP-4-dehydro-6-deoxy-D-mannose and H2O....

: D-glutamate cyclase
D-glutamate cyclase
In enzymology, a D-glutamate cyclase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, D-glutamate, and two products, 5-oxo-D-proline and H2O....

: urocanate hydratase
Urocanate hydratase
Urocanase is the enzyme that catalyzes the second step in the degradation of histidine, the hydration of urocanate into imidazolonepropionate....

: pyrazolylalanine synthase
Pyrazolylalanine synthase
In enzymology, a pyrazolylalanine synthase is an enzyme that catalyzes the chemical reactionThus, the two substrates of this enzyme are L-serine and pyrazole, whereas its two products are 3--L-alanine and H2O....

: prephenate dehydratase
Prephenate dehydratase
In enzymology, a prephenate dehydratase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, prephenate, but 3 products: phenylpyruvate, H2O, and CO2....

: dihydrodipicolinate synthase
Dihydrodipicolinate synthase
In enzymology, a dihydrodipicolinate synthase is an enzyme that catalyzes the chemical reactionThus, the two substrates of this enzyme are L-aspartate 4-semialdehyde and pyruvate, whereas its two products are -2,3-dihydropyridine-2,6-dicarboxylate and H2O.This enzyme belongs to the family of...

: oleate hydratase
Oleate hydratase
In enzymology, an oleate hydratase is an enzyme that catalyzes the chemical reaction-10-hydroxystearate \rightleftharpoons oleate + H2OHence, this enzyme has one substrate, -10-hydroxystearate, and two products, oleate and H2O....

: lactoyl-CoA dehydratase
Lactoyl-CoA dehydratase
In enzymology, a lactoyl-CoA dehydratase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, lactoyl-CoA, and two products, acryloyl-CoA and H2O....

: 3-hydroxybutyryl-CoA dehydratase
3-hydroxybutyryl-CoA dehydratase
In enzymology, a 3-hydroxybutyryl-CoA dehydratase is an enzyme that catalyzes the chemical reaction-3-hydroxybutanoyl-CoA \rightleftharpoons crotonoyl-CoA + H2O...

: itaconyl-CoA hydratase
Itaconyl-CoA hydratase
In enzymology, an itaconyl-CoA hydratase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, citramalyl-CoA, and two products, itaconyl-CoA and H2O....

: isohexenylglutaconyl-CoA hydratase
Isohexenylglutaconyl-CoA hydratase
In enzymology, an isohexenylglutaconyl-CoA hydratase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, 3-hydroxy-3-glutaryl-CoA, and two products, 3-pent-2-enedioyl-CoA and H2O.This enzyme belongs to the family of lyases, specifically the hydro-lyases, which...

: crotonoyl-(acyl-carrier-protein) hydratase
Crotonoyl-(acyl-carrier-protein) hydratase
In enzymology, a crotonoyl-[acyl-carrier-protein] hydratase is an enzyme that catalyzes the chemical reaction-3-hydroxybutanoyl-[acyl-carrier-protein] \rightleftharpoons but-2-enoyl-[acyl-carrier-protein] + H2O...

: 3-hydroxyoctanoyl-(acyl-carrier-protein) dehydratase
3-hydroxyoctanoyl-(acyl-carrier-protein) dehydratase
In enzymology, a 3-hydroxyoctanoyl-[acyl-carrier-protein] dehydratase is an enzyme that catalyzes the chemical reaction-3-hydroxyoctanoyl-[acyl-carrier-protein] \rightleftharpoons oct-2-enoyl-[acyl-carrier-protein] + H2O...

: 3-hydroxydecanoyl-(acyl-carrier-protein) dehydratase: 3-hydroxypalmitoyl-(acyl-carrier-protein) dehydratase
3-hydroxypalmitoyl-(acyl-carrier-protein) dehydratase
In enzymology, a 3-hydroxypalmitoyl-[acyl-carrier-protein] dehydratase is an enzyme that catalyzes the chemical reaction-3-hydroxypalmitoyl-[acyl-carrier-protein] \rightleftharpoons hexadec-2-enoyl-[acyl-carrier-protein] + H2O...

: 5a-hydroxysteroid dehydratase: now EC 3.3.2.3: now EC 3.3.2.3: 3-cyanoalanine hydratase
3-cyanoalanine hydratase
In enzymology, a 3-cyanoalanine hydratase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, L-asparagine, and two products, 3-cyanoalanine and H2O....

: cyanide hydratase
Cyanide hydratase
In enzymology, a cyanide hydratase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, formamide, and two products, cyanide and H2O....

: D-fuconate dehydratase
D-fuconate dehydratase
In enzymology, a D-fuconate dehydratase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, D-fuconate, and two products, 2-dehydro-3-deoxy-D-fuconate and H2O....

: L-fuconate dehydratase
L-fuconate dehydratase
In enzymology, a L-fuconate dehydratase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, L-fuconate, and two products, 2-dehydro-3-deoxy-L-fuconate and H2O....

: cyanamide hydratase
Cyanamide hydratase
In enzymology, a cyanamide hydratase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, urea, and two products, cyanamide and H2O....

: pseudouridylate synthase
Pseudouridylate synthase
In enzymology, a pseudouridylate synthase is an enzyme that catalyzes the chemical reactionThus, the two substrates of this enzyme are uracil and D-ribose 5-phosphate, whereas its two products are pseudouridine 5'-phosphate and H2O....

: identical to EC 4.2.1.27: now EC 4.1.1.78: protoaphin-aglucone dehydratase (cyclizing)
Protoaphin-aglucone dehydratase (cyclizing)
In enzymology, a protoaphin-aglucone dehydratase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, protoaphin aglucone, and two products, xanthoaphin and H2O....

: long-chain-enoyl-CoA hydratase
Long-chain-enoyl-CoA hydratase
In enzymology, a long-chain-enoyl-CoA hydratase is an enzyme that catalyzes the chemical reaction-3-hydroxyacyl-CoA \rightleftharpoons trans-2-enoyl-CoA + H2O...

: uroporphyrinogen-III synthase: UDP-glucose 4,6-dehydratase
UDP-glucose 4,6-dehydratase
In enzymology, an UDP-glucose 4,6-dehydratase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, UDP-glucose, and two products, UDP-4-dehydro-6-deoxy-D-glucose and H2O....

: trans-L-3-hydroxyproline dehydratase
Trans-L-3-hydroxyproline dehydratase
In enzymology, a trans-L-3-hydroxyproline dehydratase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, trans-L-3-hydroxyproline, and two products, Delta1-pyrroline 2-carboxylate and H2O....

: (S)-norcoclaurine synthase
(S)-norcoclaurine synthase
In enzymology, a -norcoclaurine synthase is an enzyme that catalyzes the chemical reactionThus, the two substrates of this enzyme are 4-hydroxyphenylacetaldehyde and 4-benzene-1,2-diol, whereas its two products are -norcoclaurine and H2O....

: 2-methylcitrate dehydratase
2-methylcitrate dehydratase
In enzymology, a 2-methylcitrate dehydratase is an enzyme that catalyzes the chemical reaction-2-hydroxybutane-1,2,3-tricarboxylate \rightleftharpoons -but-2-ene-1,2,3-tricarboxylate + H2O...

: 2-oxopent-4-enoate hydratase
2-oxopent-4-enoate hydratase
In enzymology, a 2-oxopent-4-enoate hydratase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, 4-hydroxy-2-oxopentanoate, and two products, 2-oxopent-4-enoate and H2O....

: D(-)-tartrate dehydratase
D(-)-tartrate dehydratase
In enzymology, a D-tartrate dehydratase is an enzyme that catalyzes the chemical reaction-tartrate \rightleftharpoons oxaloacetate + H2OHence, this enzyme has one substrate, -tartrate, and two products, oxaloacetate and H2O....

: xylonate dehydratase
Xylonate dehydratase
In enzymology, a xylonate dehydratase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, D-xylonate, and two products, 2-dehydro-3-deoxy-D-xylonate and H2O....

: 4-oxalmesaconate hydratase
4-oxalmesaconate hydratase
In enzymology, a 4-oxalmesaconate hydratase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, 2-hydroxy-4-oxobutane-1,2,4-tricarboxylate, and two products, -4-oxobut-1-ene-1,2,4-tricarboxylate and H2O....

: nitrile hydratase
Nitrile hydratase
In enzymology, nitrile hydratases are mononuclear iron or non-corrinoid cobalt enzymes that catalyse the hydration of diverse nitriles to their corresponding amidesR-C≡N + H2O → R-CNH2-Metal cofactor:...

: dimethylmaleate hydratase
Dimethylmaleate hydratase
In enzymology, a dimethylmaleate hydratase is an enzyme that catalyzes the chemical reaction-2,3-dimethylmalate \rightleftharpoons dimethylmaleate + H2O...

: deleted identical to EC 4.2.1.98: octopamine dehydratase
Octopamine dehydratase
In enzymology, an octopamine dehydratase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, 1--2-aminoethanol, and two products, 4-hydroxyphenylacetaldehyde and NH3....

: synephrine dehydratase
Synephrine dehydratase
In enzymology, a synephrine dehydratase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, 1--2-ethanol , and two products, 4-hydroxyphenylacetaldehyde and methylamine....

: carnitine dehydratase
Carnitine dehydratase
In enzymology, a carnitine dehydratase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, L-carnitine, and two products, 4-but-2-enoate and H2O....

: L-rhamnonate dehydratase
L-rhamnonate dehydratase
In enzymology, a L-rhamnonate dehydratase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, L-rhamnonate, and two products, 2-dehydro-3-deoxy-L-rhamnonate and H2O....

: arogenate dehydratase
Arogenate dehydratase
In enzymology, an arogenate dehydratase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, L-arogenate, but 3 products: L-phenylalanine, H2O, and CO2....

: hydroperoxide dehydratase
Hydroperoxide dehydratase
In enzymology, a hydroperoxide dehydratase is an enzyme that catalyzes the chemical reaction--hydroperoxyoctadeca-9,11,14-trienoate \rightleftharpoons --12,13-epoxyoctadeca-9,11-dienoate + H2O...

: ATP-dependent NAD(P)H-hydrate dehydratase
ATP-dependent NAD(P)H-hydrate dehydratase
In enzymology, an ATP-dependent NADH-hydrate dehydratase is an enzyme that catalyzes the chemical reactionThe 3 substrates of this enzyme are ATP, -6-beta-hydroxy-1,4,5,6-tetrahydronicotinamide-adenine, and dinucleotide, whereas its 3 products are ADP, phosphate, and NADH.This enzyme belongs to...

: scytalone dehydratase
Scytalone dehydratase
In enzymology, a scytalone dehydratase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, scytalone, and two products, 1,3,8-trihydroxynaphthalene and H2O....

: kievitone hydratase
Kievitone hydratase
In enzymology, a kievitone hydratase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, kievitone hydrate, and two products, kievitone and H2O....

: 4a-hydroxytetrahydrobiopterin dehydratase
4a-hydroxytetrahydrobiopterin dehydratase
In enzymology, a 4a-hydroxytetrahydrobiopterin dehydratase is an enzyme that catalyzes the chemical reaction-6--5,6,7,8-tetrahydro-4a- hydroxypterin \rightleftharpoons -6--7,8-dihydro-6H-pterin + H2OThus, the two substrates of this enzyme are -6--5,6,7,8-tetrahydro-4a- and...

: phaseollidin hydratase
Phaseollidin hydratase
In enzymology, a phaseollidin hydratase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, phaseollidin hydrate, and two products, phaseollidin and H2O....

: 16a-hydroxyprogesterone dehydratase: 2-methylisocitrate dehydratase
2-methylisocitrate dehydratase
In enzymology, a 2-methylisocitrate dehydratase is an enzyme that catalyzes the chemical reaction-3-hydroxybutane-1,2,3-tricarboxylate \rightleftharpoons -but-2-ene-1,2,3-tricarboxylate + H2O...

: cyclohexa-1,5-dienecarbonyl-CoA hydratase
Cyclohexa-1,5-dienecarbonyl-CoA hydratase
In enzymology, a cyclohexa-1,5-dienecarbonyl-CoA hydratase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, 6-hydroxycyclohex-1-enecarbonyl-CoA, and two products, cyclohexa-1,5-dienecarbonyl-CoA and H2O....

: trans-feruloyl-CoA hydratase
Trans-feruloyl-CoA hydratase
In enzymology, a trans-feruloyl-CoA hydratase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, 4-hydroxy-3-methoxyphenyl-beta-hydroxypropanoyl-CoA, and two products, trans-feruloyl-CoA and H2O....

: now EC 4.2.1.100: cyclohexyl-isocyanide hydratase
Cyclohexyl-isocyanide hydratase
In enzymology, a cyclohexyl-isocyanide hydratase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, N-cyclohexylformamide, and two products, cyclohexyl isocyanide and H2O....

: cyanate hydratase
Cyanate hydratase
In molecular biology, cyanate hydratase is an enzyme which catalyses the hydrolysis of cyanate. It is also known as cyanate lyase or cyanase.Some bacteria can overcome the toxicity of environmental cyanate by hydrolysis of cyanate by this enzyme...

: 2-hydroxyisoflavanone dehydratase
2-hydroxyisoflavanone dehydratase
In enzymology, a 2-hydroxyisoflavanone dehydratase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, 2,7,4'-trihydroxyisoflavanone, and two products, daidzein and H2O....

: bile-acid 7a-dehydratase: 3a,7a,12a-trihydroxy-5b-cholest-24-enoyl-CoA dehydratase

EC 4.2.2: Acting on Polysaccharides

: hyaluronate lyase
Hyaluronate lyase
In enzymology, a hyaluronate lyase is an enzyme that catalyzes the chemical reactionThis enzyme belongs to the family of lyases, specifically those carbon-oxygen lyases acting on polysaccharides. The systematic name of this enzyme class is hyaluronate lyase. Other names in common use include...

: pectate lyase
Pectate lyase
Pectate lyase is an enzyme involved in the maceration and soft rotting of plant tissue. Pectate lyase is responsible for the eliminative cleavage of pectate, yielding oligosaccharides with 4-deoxy-alpha-D-mann-4-enuronosyl groups at their non-reducing ends. The protein is maximally expressed late...

: poly(b-D-mannuronate) lyase: chondroitin ABC lyase: chondroitin AC lyase
Chondroitin AC lyase
In enzymology, a chondroitin AC lyase is an enzyme that catalyzes the chemical reactionThis enzyme belongs to the family of lyases, specifically those carbon-oxygen lyases acting on polysaccharides. The systematic name of this enzyme class is chondroitin AC lyase...

: oligogalacturonide lyase
Oligogalacturonide lyase
In enzymology, an oligogalacturonide lyase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, 4--D-galacturonate, and one product, 5-dehydro-4-deoxy-D-glucuronate....

: heparin lyase
Heparin lyase
In enzymology, a heparin lyase is an enzyme that catalyzes the chemical reactionThis enzyme belongs to the family of lyases, specifically those carbon-oxygen lyases acting on polysaccharides. The systematic name of this enzyme class is heparin lyase. Other names in common use include heparin...

: heparin-sulfate lyase
Heparin-sulfate lyase
In enzymology, a heparin-sulfate lyase is an enzyme that catalyzes the chemical reactionThis enzyme belongs to the family of lyases, specifically those carbon-oxygen lyases acting on polysaccharides. The systematic name of this enzyme class is heparin-sulfate lyase...

: pectate disaccharide-lyase
Pectate disaccharide-lyase
In enzymology, a pectate disaccharide-lyase is an enzyme that catalyzes the chemical reactionThis enzyme belongs to the family of lyases, specifically those carbon-oxygen lyases acting on polysaccharides. The systematic name of this enzyme class is -alpha-D-galacturonan...

: pectin lyase
Pectin lyase
In enzymology, a pectin lyase also known as pectolyase is a naturally occurring pectinase a type of enzyme that degrades pectin. It is produced commercially for the food industry from fungi and used to destroy residual fruit starch, known as pectin, in wine and cider...

: poly(a-L-guluronate) lyase: xanthan lyase
Xanthan lyase
In enzymology, a xanthan lyase is an enzyme that catalyzes the chemical reaction of cleaving the beta-D-mannosyl-beta-D-1,4-glucuronosyl bond on the polysaccharide xanthan. This enzyme belongs to the family of lyases, specifically those carbon-oxygen lyases acting on polysaccharides...

: exo-(1→4)-α-D-glucan lyase: glucuronan lyase
Glucuronan lyase
In enzymology, a glucuronan lyase is an enzyme that catalyzes the chemical reaction of eliminative cleavage of -beta-D-glucuronans. This produces either oligosaccharides with 4-deoxy-beta-D-gluc-4-enuronosyl groups at their non-reducing ends, or, if the substrate is completely degraded,...

: anhydrosialidase
Anhydrosialidase
In enzymology, an anhydrosialidase is an enzyme that catalyzes the chemical reactionThis enzyme belongs to the family of lyases, specifically those carbon-oxygen lyases acting on polysaccharides. The systematic name of this enzyme class is glycoconjugate sialyl-lyase ...

: levan fructotransferase (DFA-IV-forming)
Levan fructotransferase (DFA-IV-forming)
In enzymology, a levan fructotransferase is an enzyme that catalyzes the chemical reactionThis enzyme belongs to the family of lyases, specifically those carbon-oxygen lyases acting on polysaccharides. The systematic name of this enzyme class is 2,6-beta-D-fructan lyase ...

: inulin fructotransferase (DFA-I-forming)
Inulin fructotransferase (DFA-I-forming)
In enzymology, an inulin fructotransferase is an enzyme that catalyzes the chemical reactionThis enzyme belongs to the family of lyases, specifically those carbon-oxygen lyases acting on polysaccharides. The systematic name of this enzyme class is 2,1-beta-D-fructan lyase ...

: inulin fructotransferase (DFA-III-forming)
Inulin fructotransferase (DFA-III-forming)
In enzymology, an inulin fructotransferase is an enzyme that catalyzes the chemical reactionThis enzyme belongs to the family of lyases, specifically those carbon-oxygen lyases acting on polysaccharides. The systematic name of this enzyme class is 2,1-beta-D-fructan lyase ...

: chondroitin B lyase
Chondroitin B lyase
In enzymology, a chondroitin B lyase is an enzyme that catalyzes the chemical reactionThis enzyme belongs to the family of lyases, specifically those carbon-oxygen lyases acting on polysaccharides. The systematic name of this enzyme class is chondroitin B lyase. Other names in common use include...


EC 4.2.3: Acting on phosphates

: threonine synthase
Threonine synthase
In enzymology, a threonine synthase is an enzyme that catalyzes the chemical reactionThus, the two substrates of this enzyme are O-phospho-L-homoserine and H2O, whereas its two products are L-threonine and phosphate....

: ethanolamine-phosphate phospho-lyase
Ethanolamine-phosphate phospho-lyase
In enzymology, an ethanolamine-phosphate phospho-lyase is an enzyme that catalyzes the chemical reactionThus, the two substrates of this enzyme are ethanolamine phosphate and H2O, whereas its 3 products are acetaldehyde, NH3, and phosphate....

: methylglyoxal synthase
Methylglyoxal synthase
In enzymology, a methylglyoxal synthase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, glycerone phosphate, and two products, methylglyoxal and phosphate....

: 3-dehydroquinate synthase
3-dehydroquinate synthase
In enzymology, a 3-dehydroquinate synthase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, 3-deoxy-arabino-heptulosonate 7-phosphate, and two products, 3-dehydroquinate and phosphate. The protein uses NAD to catalyze the reaction...

: chorismate synthase
Chorismate synthase
In enzymology, a chorismate synthase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, 5-O--3-phosphoshikimate, and two products, chorismate and phosphate....

: trichodiene synthase
Trichodiene synthase
In enzymology, a trichodiene synthase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, trans,trans-farnesyl diphosphate, and two products, trichodiene and diphosphate....

: pentalenene synthase
Pentalenene synthase
In enzymology, a pentalenene synthase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, 2-trans,6-trans-farnesyl diphosphate, and two products, pentalenene and diphosphate....

: casbene synthase
Casbene synthase
In enzymology, a casbene synthase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, geranylgeranyl diphosphate, and two products, casbene and diphosphate....

: aristolochene synthase
Aristolochene synthase
In enzymology, an aristolochene synthase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, 2-trans,6-trans-farnesyl diphosphate, and two products, aristolochene and diphosphate....

: (-)-endo-fenchol synthase
(-)-endo-fenchol synthase
In enzymology, a -endo-fenchol synthase is an enzyme that catalyzes the chemical reactionThus, the two substrates of this enzyme are geranyl diphosphate and H2O, whereas its two products are -endo-fenchol and diphosphate....

: sabinene-hydrate synthase
Sabinene-hydrate synthase
In enzymology, a sabinene-hydrate synthase is an enzyme that catalyzes the chemical reactionThus, the two substrates of this enzyme are geranyl diphosphate and H2O, whereas its two products are sabinene hydrate and diphosphate....

: 6-pyruvoyltetrahydropterin synthase
6-pyruvoyltetrahydropterin synthase
In enzymology, a 6-pyruvoyltetrahydropterin synthase is an enzyme that catalyzes the following chemical reaction:Hence, this enzyme has one substrate, 6-[-1,2-dihydroxy-3-triphosphooxypropyl]-7,8-dihydropterin, and two products, 6-pyruvoyl-5,6,7,8-tetrahydropterin and triphosphate.This enzyme...

: (+)-d-cadinene synthase: pinene synthase
Pinene synthase
In enzymology, a pinene synthase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, geranyl diphosphate, and two products, pinene and diphosphate....

: myrcene synthase
Myrcene synthase
In enzymology, a myrcene synthase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, geranyl diphosphate, and two products, myrcene and diphosphate....

: (4S)-limonene synthase
(4S)-limonene synthase
In enzymology, a -limonene synthase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, geranyl diphosphate, and two products, --limonene and diphosphate....

: taxadiene synthase
Taxadiene synthase
In enzymology, a taxadiene synthase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, geranylgeranyl diphosphate, and two products, taxa-4,11-diene and diphosphate....

: abietadiene synthase
Abietadiene synthase
In enzymology, an abietadiene synthase is an enzyme that catalyzes the chemical reaction-copalyl diphosphate \rightleftharpoons -abietadiene + diphosphate...

: ent-kaurene synthase
Ent-kaurene synthase
In enzymology, an ent-kaurene synthase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, ent-copalyl diphosphate, and two products, ent-kaurene and diphosphate....

: (R)-limonene synthase
(R)-limonene synthase
In enzymology, a -limonene synthase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, geranyl diphosphate, and two products, --limonene and diphosphate....

: vetispiradiene synthase
Vetispiradiene synthase
In enzymology, a vetispiradiene synthase is an enzyme of Egyptian henbane that catalyzes the following chemical reaction:Hence, this enzyme has one substrate, trans,trans-farnesyl diphosphate, and two products, vetispiradiene and diphosphate....


EC 4.2.99: Other Carbon-Oxygen Lyases

: now EC 4.2.2.2: now EC 4.2.3.1: now EC 4.2.2.2: now EC 4.2.2.3: deleted: deleted, included in EC 4.2.2.4 and EC 4.2.2.5: now EC 4.2.3.2: now EC 2.5.1.47: now EC 2.5.1.48: now EC 2.5.1.49: now EC 4.2.3.3: carboxymethyloxysuccinate lyase
Carboxymethyloxysuccinate lyase
In enzymology, a carboxymethyloxysuccinate lyase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, carboxymethyloxysuccinate, and two products, fumarate and glycolate....

: now EC 2.5.1.50: now EC 2.5.1.51: now EC 2.5.1.52: now EC 2.5.1.53: now EC 4.2.99.14: DNA-(apurinic or apyrimidinic site) lyase
DNA-(apurinic or apyrimidinic site) lyase
In enzymology, a DNA- lyase is an enzyme that catalyzes the chemical reactionThis enzyme belongs to the family of lyases, specifically the "catch-all" class of lyases that cleave carbon-oxygen bonds. The systematic name of this enzyme class is DNA- 5'-phosphomonoester-lyase...

: transferred entry, now EC 4.4.1.23

EC 4.3.1: Ammonia-Lyases

: aspartate ammonia-lyase
Aspartate ammonia-lyase
In enzymology, an aspartate ammonia-lyase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, L-aspartate, and two products, fumarate and NH3....

: methylaspartate ammonia-lyase
Methylaspartate ammonia-lyase
In enzymology, a methylaspartate ammonia-lyase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, L-threo-3-methylaspartate, and two products, mesaconate and NH3....

: histidine ammonia-lyase
Histidine ammonia-lyase
Histidine ammonia-lyase is an enzyme that in humans is encoded by the HAL gene. Histidase converts histidine into ammonia and urocanic acid.- Function :...

: formiminotetrahydrofolate cyclodeaminase: phenylalanine ammonia-lyase
Phenylalanine ammonia-lyase
In enzymology, a phenylalanine ammonia-lyase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, L-phenylalanine, and two products, trans-cinnamic acid and ammonia....

: b-alanyl-CoA ammonia-lyase: ethanolamine ammonia-lyase
Ethanolamine ammonia-lyase
In enzymology, an ethanolamine ammonia-lyase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, ethanolamine, and two products, acetaldehyde and NH3....

: now EC 2.5.1.61: glucosaminate ammonia-lyase
Glucosaminate ammonia-lyase
In enzymology, a glucosaminate ammonia-lyase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, D-glucosaminate, and two products, 2-dehydro-3-deoxy-D-gluconate and NH3....

: serine-sulfate ammonia-lyase
Serine-sulfate ammonia-lyase
In enzymology, a serine-sulfate ammonia-lyase is an enzyme that catalyzes the chemical reactionThus, the two substrates of this enzyme are L-serine O-sulfate and H2O, whereas its 3 products are pyruvate, NH3, and sulfate....

: dihydroxyphenylalanine ammonia-lyase
Dihydroxyphenylalanine ammonia-lyase
In enzymology, a dihydroxyphenylalanine ammonia-lyase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, 3,4-dihydroxy-L-phenylalanine, and two products, trans-caffeate and NH3....

: ornithine cyclodeaminase
Ornithine cyclodeaminase
In enzymology, an ornithine cyclodeaminase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, L-ornithine, and two products, L-proline and NH3....

: carbamoyl-serine ammonia-lyase
Carbamoyl-serine ammonia-lyase
In enzymology, a carbamoyl-serine ammonia-lyase is an enzyme that catalyzes the chemical reactionThus, the two substrates of this enzyme are O-carbamoyl-L-serine and H2O, whereas its 3 products are pyruvate, NH3, and CO2....

: 3-aminobutyryl-CoA ammonia-lyase
3-aminobutyryl-CoA ammonia-lyase
In enzymology, a 3-aminobutyryl-CoA ammonia-lyase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, L-3-aminobutyryl-CoA, and two products, crotonoyl-CoA and NH3....

: diaminopropionate ammonia-lyase
Diaminopropionate ammonia-lyase
In enzymology, a diaminopropionate ammonia-lyase is an enzyme that catalyzes the chemical reactionThus, the two substrates of this enzyme are 2,3-diaminopropanoate and H2O, whereas its two products are pyruvate and NH3....

: threo-3-hydroxyaspartate ammonia-lyase
Threo-3-hydroxyaspartate ammonia-lyase
In enzymology, a threo-3-hydroxyaspartate ammonia-lyase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, threo-3-hydroxy-L-aspartate, and two products, oxaloacetate and NH3....

: L-serine ammonia-lyase
L-serine ammonia-lyase
In enzymology, a L-serine ammonia-lyase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, L-serine, and two products, pyruvate and NH3....

: D-serine ammonia-lyase
D-serine ammonia-lyase
In enzymology, a D-serine ammonia-lyase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, D- in common use include D-hydroxyaminoacid dehydratase, D-serine dehydrase, D-hydroxy amino acid dehydratase, D-serine hydrolase, D-serine dehydratase , D-serine...

: threonine ammonia-lyase
Threonine ammonia-lyase
In enzymology, a threonine ammonia-lyase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, L-threonine, and two products, Alpha-Ketobutyric_acid and NH3....

: erythro-3-hydroxyaspartate ammonia-lyase
Erythro-3-hydroxyaspartate ammonia-lyase
In enzymology, an erythro-3-hydroxyaspartate ammonia-lyase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, erythro-3-hydroxy-Ls-aspartate, and two products, oxaloacetate and NH3....

: Identical to EC 4.3.1.9

EC 4.3.2: Amidine-Lyases

: argininosuccinate lyase: adenylosuccinate lyase
Adenylosuccinate lyase
Adenylosuccinate lyase is an enzyme that converts adenylosuccinate to AMP and fumarate as part of the purine nucleotide cycle....

: ureidoglycolate lyase
Ureidoglycolate lyase
In enzymology, an ureidoglycolate lyase is an enzyme that catalyzes the chemical reaction-ureidoglycolate \rightleftharpoons glyoxylate + ureaHence, this enzyme has one substrate, -ureidoglycolate, and two products, glyoxylate and urea....

: purine imidazole-ring cyclase
Purine imidazole-ring cyclase
In enzymology, a purine imidazole-ring cyclase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, DNA 4,6-diamino-5-formamidopyrimidine, and two products, DNA adenine and H2O....

: peptidylamidoglycolate lyase
Peptidylamidoglycolate lyase
In enzymology, a peptidylamidoglycolate lyase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, peptidylamidoglycolate, and two products, peptidyl amide and glyoxylate....


EC 4.3.3: Amine-Lyases

: 3-ketovalidoxylamine C-N-lyase
3-ketovalidoxylamine C-N-lyase
In enzymology, a 3-ketovalidoxylamine C-N-lyase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, 4-nitrophenyl-3-ketovalidamine, and two products, 4-nitroaniline and 5-D--5-C--2,6-dihydroxycyclohex-2-en-1-one.This enzyme belongs to the family of lyases,...

: strictosidine synthase
Strictosidine synthase
Strictosidine synthase a key enzyme in alkaloid biosynthesis. It catalyses the condensation of tryptamine with secologanin to form strictosidine:...

: deacetylisoipecoside synthase
Deacetylisoipecoside synthase
In enzymology, a deacetylisoipecoside synthase is an enzyme that catalyzes the chemical reactionThus, the two substrates of this enzyme are deacetylisoipecoside and H2O, whereas its two products are dopamine and secologanin....

: deacetylipecoside synthase
Deacetylipecoside synthase
In enzymology, a deacetylipecoside synthase is an enzyme that catalyzes the chemical reactionThus, the two substrates of this enzyme are deacetylipecoside and H2O, whereas its two products are dopamine and secologanin....


EC 4.4: Carbon-Sulfur Lyases

: cystathionine g-lyase: homocysteine desulfhydrase
Homocysteine desulfhydrase
In enzymology, a homocysteine desulfhydrase is an enzyme that catalyzes the chemical reactionThus, the two substrates of this enzyme are L-homocysteine and H2O, whereas its 3 products are hydrogen sulfide, NH3, and 2-oxobutanoate....

: dimethylpropiothetin dethiomethylase
Dimethylpropiothetin dethiomethylase
In enzymology, a dimethylpropiothetin dethiomethylase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, S,S-dimethyl-beta-propiothetin, and two products, dimethyl sulfide and acrylate....

: alliin lyase: lactoylglutathione lyase
Lactoylglutathione lyase
In enzymology, a lactoylglutathione lyase is an enzyme that catalyzes the isomerization of hemithioacetal adducts, which are formed in a spontaneous reaction between a glutathionyl group and aldehydes such as methylglyoxal.The systematic name of this enzyme class is -S-lactoylglutathione...

: S-alkylcysteine lyase
S-alkylcysteine lyase
In enzymology, a S-alkylcysteine lyase is an enzyme that catalyzes the chemical reactionThus, the two substrates of this enzyme are S-alkyl-L-cysteine and H2O, whereas its 3 products are alkyl thiol, NH3, and pyruvate....

: deleted, included in EC 2.5.1.18: cystathionine b-lyase: L-3-cyanoalanine synthase
L-3-cyanoalanine synthase
In enzymology, a L-3-cyanoalanine synthase is an enzyme that catalyzes the chemical reactionThus, the two substrates of this enzyme are L-cysteine and hydrogen cyanide, whereas its two products are L-3-cyanoalanine and hydrogen sulfide....

: cysteine lyase
Cysteine lyase
In enzymology, a cysteine lyase is an enzyme that catalyzes the chemical reactionThus, the two substrates of this enzyme are L-cysteine and sulfite, whereas its two products are L-cysteate and hydrogen sulfide....

: methionine g-lyase: deleted: cysteine-S-conjugate b-lyase: 1-aminocyclopropane-1-carboxylate synthase
1-aminocyclopropane-1-carboxylate synthase
In enzymology, a 1-aminocyclopropane-1-carboxylate synthase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, S-adenosyl-L-methionine, and two products, 1-aminocyclopropane-1-carboxylate and methylthioadenosine....

: D-cysteine desulfhydrase
D-cysteine desulfhydrase
In enzymology, a D-cysteine desulfhydrase is an enzyme that catalyzes the chemical reactionThus, the two substrates of this enzyme are D-cysteine and H2O, whereas its 3 products are sulfide, NH3, and pyruvate....

: selenocysteine lyase
Selenocysteine lyase
In enzymology, a selenocysteine lyase is an enzyme that catalyzes the chemical reactionThus, the two substrates of this enzyme are L-selenocysteine and reduced acceptor, whereas its 3 products are selenide, L-alanine, and acceptor....

: holocytochrome-c synthase
Holocytochrome-c synthase
In enzymology, a holocytochrome-c synthase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, holocytochrome c, and two products, apocytochrome c and heme....

: now EC 1.8.3.5: phosphosulfolactate synthase
Phosphosulfolactate synthase
In enzymology, a phosphosulfolactate synthase is an enzyme that catalyzes the chemical reaction-2-O-phospho-3-sulfolactate \rightleftharpoons phosphoenolpyruvate + hydrogen sulfite...

: leukotriene-C4 synthase
Leukotriene-C4 synthase
In enzymology, a leukotriene-C4 synthase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, leukotriene C4, and two products, leukotriene A4 and glutathione....

: S-ribosylhomocysteine lyase
S-ribosylhomocysteine lyase
In enzymology, a S-ribosylhomocysteine lyase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, S--L-homocysteine, and two products, L-homocysteine and -4,5-dihydroxypentan-2,3-dione....

: S-(hydroxymethyl)glutathione synthase
S-(hydroxymethyl)glutathione synthase
In enzymology, a S-glutathione synthase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, S-glutathione, and two products, glutathione and formaldehyde....

: 2-hydroxypropyl-CoM lyase

EC 4.5: Carbon-Halide Lyases

: DDT-dehydrochlorinase
DDT-dehydrochlorinase
In enzymology, a DDT-dehydrochlorinase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, 1,1,1-trichloro-2,2-bisethane, and two products, 1,1-dichloro-2,2-bisethylene and chloride....

: 3-chloro-D-alanine dehydrochlorinase
3-chloro-D-alanine dehydrochlorinase
In enzymology, a 3-chloro-D-alanine dehydrochlorinase is an enzyme that catalyzes the chemical reactionThus, the two substrates of this enzyme are 3-chloro-D-alanine and H2O, whereas its 3 products are pyruvate, chloride, and NH3....

: dichloromethane dehalogenase
Dichloromethane dehalogenase
Dichloromethane dehalogenase is a lyase enzyme which generates formaldehyde.It is classified under ....

: L-2-amino-4-chloropent-4-enoate dehydrochlorinase
L-2-amino-4-chloropent-4-enoate dehydrochlorinase
In enzymology, a L-2-amino-4-chloropent-4-enoate dehydrochlorinase , an enzyme, catalyzes the chemical reaction.Thus, the two substrates of this enzyme are L-2-amino-4-chloropent-4-enoate and H2O, whereas its 3 products are 2-oxopent-4-enoate, chloride, and NH3.This enzyme belongs to the family of...

: S-carboxymethylcysteine synthase
S-carboxymethylcysteine synthase
In enzymology, a S-carboxymethylcysteine synthase is an enzyme that catalyzes the chemical reactionThus, the two substrates of this enzyme are 3-chloro-L-alanine and thioglycolate, whereas its two products are S-carboxymethyl-L-cysteine and chloride....


EC 4.6: Phosphorus-Oxygen Lyases

: adenylate cyclase
Adenylate cyclase
Adenylate cyclase is part of the G protein signalling cascade, which transmits chemical signals from outside the cell across the membrane to the inside of the cell ....

: guanylate cyclase
Guanylate cyclase
-Reaction:Guanylate cyclase catalyzes the reaction of guanosine triphosphate to 3',5'-cyclic guanosine monophosphate and pyrophosphate:-Types:...

: now EC 4.2.3.4: now EC 4.2.3.5: now EC 4.2.3.7: cytidylate cyclase
Cytidylate cyclase
In enzymology, a cytidylate cyclase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, CTP, and two products, 3',5'-cyclic CMP and diphosphate....

: now EC 4.2.3.8: now EC 4.2.3.10: now EC 4.2.3.11: now EC 4.2.3.12: now EC 4.2.3.13: 2-C-methyl-D-erythritol 2,4-cyclodiphosphate synthase
2-C-methyl-D-erythritol 2,4-cyclodiphosphate synthase
In enzymology, a 2-C-methyl-D-erythritol 2,4-cyclodiphosphate synthase is an enzyme is a lyase which participates in biosynthesis of steroids. It catalyzes the chemical reaction:...

: phosphatidylinositol diacylglycerol-lyase
Phosphatidylinositol diacylglycerol-lyase
In enzymology, a phosphatidylinositol diacylglycerol-lyase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, 1-phosphatidyl-1D-myo-inositol, and two products, 1D-myo-inositol 1,2-cyclic phosphate and 1,2-diacyl-sn-glycerol.This enzyme belongs to the family of...

: glycosylphosphatidylinositol diacylglycerol-lyase
Glycosylphosphatidylinositol diacylglycerol-lyase
In enzymology, a glycosylphosphatidylinositol diacylglycerol-lyase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, 6--1-phosphatidyl-1D-myo-inositol, and two products, 6--1D-myo-inositol 1,2-cyclic phosphate and 1,2-diacyl-sn-glycerol.This enzyme belongs to...

: FAD-AMP lyase (cyclizing)
FAD-AMP lyase (cyclizing)
In enzymology, a FAD-AMP lyase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, FAD, and two products, AMP and riboflavin cyclic-4',5'-phosphate....


EC 4.99: Other Lyases

: ferrochelatase
Ferrochelatase
Ferrochelatase is an enzyme that catalyses the terminal step in the biosynthesis of heme, converting protoporphyrin IX into heme. It catalyses the reaction:A ferrochelatase enzyme consists of 497 amino acid residues with a m.w...

: alkylmercury lyase
Alkylmercury lyase
In enzymology, an alkylmercury lyase is an enzyme that catalyzes the chemical reactionThus, the two substrates of this enzyme are alkylmercury and H+, whereas its two products are alkane and Hg2+....

: sirohydrochlorin cobaltochelatase
Sirohydrochlorin cobaltochelatase
In enzymology, a sirohydrochlorin cobaltochelatase is an enzyme that catalyzes the chemical reactionThus, the two substrates of this enzyme are cobalt-sirohydrochlorin and H+, whereas its two products are sirohydrochlorin and Co2+....

: sirohydrochlorin ferrochelatase
Sirohydrochlorin ferrochelatase
In enzymology, a sirohydrochlorin ferrochelatase is an enzyme that catalyzes the chemical reactionThus, the two substrates of this enzyme are siroheme and H+, whereas its two products are sirohydrochlorin and Fe2+....

: aliphatic aldoxime dehydratase
Aliphatic aldoxime dehydratase
In enzymology, an aliphatic aldoxime dehydratase is an enzyme that catalyzes the chemical reactionHence, this enzyme has one substrate, aliphatic aldoxime, and two products, aliphatic nitrile and H2O....

: indoleacetaldoxime dehydratase
Indoleacetaldoxime dehydratase
In enzymology, an indoleacetaldoxime dehydratase is an enzyme that catalyzes the chemical reactionacetaldehyde oxime \rightleftharpoons acetonitrile + H2O...

: phenylacetaldoxime dehydratase
Phenylacetaldoxime dehydratase
In enzymology, a phenylacetaldoxime dehydratase is an enzyme that catalyzes the chemical reaction-phenylacetaldehyde oxime \rightleftharpoons phenylacetonitrile + H2O...

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