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Intermembrane space

 

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Intermembrane space



 
 
The intermembrane space is the region between the inner membrane
Inner membrane

The inner membrane is the biological membrane of an organelle or Gram-negative bacteria that is within an outer membrane.In eukaryotic cells, this inner membrane is present within the nuclear envelope, mitochondria and plastids like the chloroplast....
 and the outer membrane
Outer membrane

The bacterial outer membrane is found in Gram-negative bacteria. Its composition is distinct from that of the cytoplasmic membrane - among other things, the outer leaflet of the membrane include a complex lipopolysaccharide whose lipid portion acts as an endotoxin - and it is linked to the cell's peptidoglycan by Braun's lipoprotein....
 of a mitochondrion
Mitochondrion

In cell biology, a mitochondrion is a membrane-enclosed organelle found in most eukaryote cell . These organelles range from 0.5–10 micrometers in diameter....
 or a chloroplast
Chloroplast

Chloroplasts are organelles found in plant cells and other eukaryote organisms that conduct photosynthesis. Chloroplasts capture light energy to conserve Thermodynamic free energy in the form of Adenosine triphosphate and reduce NADP to NADPH through a complex set of processes called photosynthesis....
. The main function of the intermembrane space is oxidative phosphorylation
Phosphorylation

Phosphorylation is the addition of a phosphate group to a protein or other organic molecule. Protein phosphorylation in particular plays a significant role in a wide range of cellular processes....
.

Channel protein
Protein

Proteins are organic compounds made of amino acids arranged in a linear chain and joined together by peptide bonds between the carboxyl and amino groups of adjacent amino acid Residue ....
s called porin
Porin (protein)

Porins are beta barrel proteins that cross a cellular cell membrane and act as a pore through which molecules can diffusion. Unlike other membrane transport proteins, porins are large enough to allow passive diffusion, i.e., they act as Ion channel that are specific to different types of molecules....
s in the outer membrane
Outer membrane

The bacterial outer membrane is found in Gram-negative bacteria. Its composition is distinct from that of the cytoplasmic membrane - among other things, the outer leaflet of the membrane include a complex lipopolysaccharide whose lipid portion acts as an endotoxin - and it is linked to the cell's peptidoglycan by Braun's lipoprotein....
 allow free movement of ion
Ion

An ion is an atom or molecule which has lost or gained one or more electrons, giving it a positive or negative electrical charge. According to the Bohr_model this will be from or in the outer shield 'n'....
s and small molecule
Molecule

In chemistry, a molecule is defined as a sufficiently stable, electric charge neutral group of at least two atoms in a definite arrangement held together by very strong chemical bonds....
s into the intermembrane space.






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Chloroplast New
The intermembrane space is the region between the inner membrane
Inner membrane

The inner membrane is the biological membrane of an organelle or Gram-negative bacteria that is within an outer membrane.In eukaryotic cells, this inner membrane is present within the nuclear envelope, mitochondria and plastids like the chloroplast....
 and the outer membrane
Outer membrane

The bacterial outer membrane is found in Gram-negative bacteria. Its composition is distinct from that of the cytoplasmic membrane - among other things, the outer leaflet of the membrane include a complex lipopolysaccharide whose lipid portion acts as an endotoxin - and it is linked to the cell's peptidoglycan by Braun's lipoprotein....
 of a mitochondrion
Mitochondrion

In cell biology, a mitochondrion is a membrane-enclosed organelle found in most eukaryote cell . These organelles range from 0.5–10 micrometers in diameter....
 or a chloroplast
Chloroplast

Chloroplasts are organelles found in plant cells and other eukaryote organisms that conduct photosynthesis. Chloroplasts capture light energy to conserve Thermodynamic free energy in the form of Adenosine triphosphate and reduce NADP to NADPH through a complex set of processes called photosynthesis....
. The main function of the intermembrane space is oxidative phosphorylation
Phosphorylation

Phosphorylation is the addition of a phosphate group to a protein or other organic molecule. Protein phosphorylation in particular plays a significant role in a wide range of cellular processes....
.

Channel protein
Protein

Proteins are organic compounds made of amino acids arranged in a linear chain and joined together by peptide bonds between the carboxyl and amino groups of adjacent amino acid Residue ....
s called porin
Porin (protein)

Porins are beta barrel proteins that cross a cellular cell membrane and act as a pore through which molecules can diffusion. Unlike other membrane transport proteins, porins are large enough to allow passive diffusion, i.e., they act as Ion channel that are specific to different types of molecules....
s in the outer membrane
Outer membrane

The bacterial outer membrane is found in Gram-negative bacteria. Its composition is distinct from that of the cytoplasmic membrane - among other things, the outer leaflet of the membrane include a complex lipopolysaccharide whose lipid portion acts as an endotoxin - and it is linked to the cell's peptidoglycan by Braun's lipoprotein....
 allow free movement of ion
Ion

An ion is an atom or molecule which has lost or gained one or more electrons, giving it a positive or negative electrical charge. According to the Bohr_model this will be from or in the outer shield 'n'....
s and small molecule
Molecule

In chemistry, a molecule is defined as a sufficiently stable, electric charge neutral group of at least two atoms in a definite arrangement held together by very strong chemical bonds....
s into the intermembrane space. This means that it is essentially continuous with the cytosol
Cytosol

The cytosol or intracellular fluid is the liquid found inside cell . In eukaryotes this liquid is separated by cell membranes from the contents of the organelles suspended in the cytosol, such as the mitochondrial matrix inside the mitochondrion....
 in terms of the solutes relevant for the functioning of these organelle
Organelle

In cell biology, an organelle is a specialized subunit within a cell that has a specific function, and is usually separately enclosed within its own lipid membrane....
s. Enzyme
Enzyme

Enzymes are biomolecules that catalysis chemical reactions. Almost all enzymes are proteins. In enzymatic reactions, the molecules at the beginning of the process are called Substrate , and the enzyme converts them into different molecules, the products....
s destined for the mitochondrial matrix
Mitochondrial matrix

In the mitochondrion, the matrix contains soluble enzymes that catalysis the oxidation of pyruvic acid and other small organic molecules.The mitochondrial matrix also contains the mitochondria's DNA and ribosomes....
 or the stroma
Stroma

Stroma may refer to:*Stroma, Scotland, an island off the northern coast of Scotland*Stroma , the connective, functionally supportive framework of a biological cell, tissue, or organ...
 can pass through the intermembrane space via transport through translocators. These are known as translocase
Translocase

Translocase is a general term for an enzyme that assists in moving another molecule, usually across a membrane.Translocases are most common secretion system in Gram positive bacteria....
 of the outer mitochondria membrane (TOM
Tom

Tom may refer to:...
) and translocase
Translocase

Translocase is a general term for an enzyme that assists in moving another molecule, usually across a membrane.Translocases are most common secretion system in Gram positive bacteria....
 of the inner mitochondrial membrane (TIM
TIM

Tim may refer to:Names*Timothy or Tim, for short.People*Tim, the Oldenburg Baby, abortion survivor*Tim , popular K-pop solo singer*Tiny Tim , American singer, ukulele player, and musical archivist...
) in mitochondria
Mitochondrion

In cell biology, a mitochondrion is a membrane-enclosed organelle found in most eukaryote cell . These organelles range from 0.5–10 micrometers in diameter....
 and translocase
Translocase

Translocase is a general term for an enzyme that assists in moving another molecule, usually across a membrane.Translocases are most common secretion system in Gram positive bacteria....
 of the outer chloroplast membrane (TOC) and translocase
Translocase

Translocase is a general term for an enzyme that assists in moving another molecule, usually across a membrane.Translocases are most common secretion system in Gram positive bacteria....
 of the inner chloroplast membrane (TIC) in chloroplast
Chloroplast

Chloroplasts are organelles found in plant cells and other eukaryote organisms that conduct photosynthesis. Chloroplasts capture light energy to conserve Thermodynamic free energy in the form of Adenosine triphosphate and reduce NADP to NADPH through a complex set of processes called photosynthesis....
s. It tends to have a low pH
PH

pH is a measure of the Acid or Base of a solution. It is defined as the cologarithm of the Activity of dissolved hydrogen ions . Hydrogen ion activity coefficients cannot be measured experimentally, so they are based on theoretical calculations....
 because of the proton gradient which results when proton
Proton

The proton is a subatomic particle with an electric charge of +1 elementary charge. It is found in the nucleus of each atom but is also stable by itself and has a second identity as the hydrogen ion, H+....
s are pumped from the mitochondrial matrix
Mitochondrial matrix

In the mitochondrion, the matrix contains soluble enzymes that catalysis the oxidation of pyruvic acid and other small organic molecules.The mitochondrial matrix also contains the mitochondria's DNA and ribosomes....
 into the intermembrane space during electron transport. The structures responsible for this are coenzyme Q
Coenzyme Q

Coenzyme Q10 is a benzoquinone, where Q refers to the quinone chemical group, and 10 refers to the isoprene chemical subunits....
, NADH coenzyme Q oxidoreductase
Oxidoreductase

In biochemistry, an oxidoreductase is an enzyme that catalyzes the transfer of electrons from one molecule to another ....
 complex (complex I), succinate-coenzyme Q oxidoreductase
Oxidoreductase

In biochemistry, an oxidoreductase is an enzyme that catalyzes the transfer of electrons from one molecule to another ....
 complex (complex II), and coenzyme Q-cytochrome
Cytochrome

Cytochromes are, in general, membrane-bound hemoproteins that contain heme groups and carry out electron transport.They are found either as subunitss or as subunits of bigger enzymatic complexes that catalyze redox reactions....
 c oxidoreductase
Oxidoreductase

In biochemistry, an oxidoreductase is an enzyme that catalyzes the transfer of electrons from one molecule to another ....
 complex (complex III).

Intermembrane space of mitochondria

Because of channels in the outer membrane
Outer membrane

The bacterial outer membrane is found in Gram-negative bacteria. Its composition is distinct from that of the cytoplasmic membrane - among other things, the outer leaflet of the membrane include a complex lipopolysaccharide whose lipid portion acts as an endotoxin - and it is linked to the cell's peptidoglycan by Braun's lipoprotein....
 of the mitochondria, the content of the intermembrane space is similar to that of the content of the cytoplasm.

Intermembrane space of chloroplast


The intermembrane space of the chloroplast
Chloroplast

Chloroplasts are organelles found in plant cells and other eukaryote organisms that conduct photosynthesis. Chloroplasts capture light energy to conserve Thermodynamic free energy in the form of Adenosine triphosphate and reduce NADP to NADPH through a complex set of processes called photosynthesis....
 is extremely small, somewhere from 10-20 nm thick.