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EC 2.4.2.51 Details
EC number
2.4.2.51
Accepted name
anthocyanidin 3-O-glucoside 2′′′-O-xylosyltransferase
Reaction
UDP-α-D-xylose + an anthocyanidin 3-O-β-D-glucoside = UDP + an anthocyanidin 3-O-β-D-sambubioside
Other name(s)
uridine 5′-diphosphate-xylose:anthocyanidin 3-O-glucose-xylosyltransferase, UGT79B1
Systematic name
UDP-α-D-xylose:anthocyanidin-3-O-β-D-glucoside 2′′′-O-xylosyltransferase
Comment
Isolated from the plants Matthiola incana (stock) [1] and Arabidopsis thaliana (mouse-eared cress) [2]. The enzyme has similar activity with the 3-glucosides of pelargonidin, cyanidin, delphinidin, quercetin and kaempferol as well as with cyanidin 3-O-rhamnosyl-(1→6)-glucoside and cyanidin 3-O-(6-acylglucoside). There is no activity with other UDP-sugars or with cyanidin 3,5-diglucoside.
History
created 2013
EC Tree
2.4.2.13 created 1961, deleted 1965