Antirrhinin
Encyclopedia
Antirrhinin is an anthocyanin
Anthocyanin
Anthocyanins are water-soluble vacuolar pigments that may appear red, purple, or blue according to pH...

. It is the 3-rutinoside of cyanidin
Cyanidin
Cyanidin is a natural organic compound. It is a particular type of anthocyanidin . It is a pigment found in many red berries including but not limited to grapes, bilberry, blackberry, blueberry, cherry, cranberry, elderberry, hawthorn, loganberry, acai berry and raspberry...

. It can be found in blackcurrant
Blackcurrant
Blackcurrant, Ribes nigrum, is a species of Ribes berry native to central and northern Europe and northern Asia, and is a perennial....

.

Metabolism

Cyanidin 3-O-rutinoside 5-O-glucosyltransferase
Cyanidin 3-O-rutinoside 5-O-glucosyltransferase
In enzymology, a cyanidin 3-O-rutinoside 5-O-glucosyltransferase is an enzyme that catalyzes the chemical reactionThus, the two substrates of this enzyme are UDP-glucose and cyanidin 3-O-rutinoside, whereas its two products are UDP and cyanidin 3-O-rutinoside 5-O-beta-D-glucoside.This enzyme...

 uses UDP-glucose and cyanidin 3-O-rutinoside (antirrhinin) to produce UDP and cyanidin 3-O-rutinoside 5-O-beta-D-glucoside.
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