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CATH Superfamily 3.40.50.2000

Glycogen Phosphorylase B;

The name of this superfamily has been modified since the most recent official CATH+ release (v4_4_0). At the point of the last release, this superfamily was named:

"
Glycogen Phosphorylase B;
".

Functional Families

Overview of the Structural Clusters (SC) and Functional Families within this CATH Superfamily. Clusters with a representative structure are represented by a filled circle.
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FunFam 87: Glycosyltransferase

There are 4 EC terms in this cluster

Please note: EC annotations are assigned to the full protein sequence rather than individual protein domains. Since a given protein can contain multiple domains, it is possible that some of the annotations below come from additional domains that occur in the same protein, but have been classified elsewhere in CATH.

Note: The search results have been sorted with the annotations that are found most frequently at the top of the list. The results can be filtered by typing text into the search box at the top of the table.

EC Term Annotations Evidence
Anthocyanidin 3-O-glucoside 2'''-O-xylosyltransferase. [EC: 2.4.2.51]
UDP-alpha-D-xylose + an anthocyanidin 3-O-beta-D-glucoside = UDP + an anthocyanidin 3-O-beta-D-sambubioside.
  • Isolated from the plants Matthiola incana (stock) and Arabidopsis thaliana (mouse-eared cress).
  • 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.
 4 Q9LVW3 Q9LVW3 W8Q6A1 W8Q6A1
Anthocyanidin 3-O-glucoside 2''-O-glucosyltransferase. [EC: 2.4.1.297]
UDP-alpha-D-glucose + an anthocyanidin 3-O-beta-D-glucoside = UDP + an anthocyanidin 3-O-sophoroside.
  • Isolated from Ipomoea nil (Japanese morning glory).
 2 Q53UH4 Q53UH5
Flavonol-3-O-glucoside glucosyltransferase. [EC: 2.4.1.239]
UDP-glucose + a flavonol 3-O-beta-D-glucoside = UDP + a flavonol 3-O- beta-D-glucosyl-(1->2)-beta-D-glucoside.
  • One of three specific glucosyltransferases in pea (Pisum sativum) that successively add a beta-D-glucosyl group first to O-3 of kaempferol, and then to O-2 of the previously added glucosyl group giving the 3-O-sophoroside and then the 3-O-sophorotrioside (see also EC 2.4.1.91 and EC 2.4.1.240).
  • TDP-glucose can replace UDP-glucose as the glucose donor but the reaction proceeds more slowly.
 2 A0A0G4DBR5 I1KEV6
Flavonol-3-O-glucoside L-rhamnosyltransferase. [EC: 2.4.1.159]
UDP-beta-L-rhamnose + a flavonol 3-O-beta-D-glucoside = UDP + a flavonol 3-O-(alpha-L-rhamnosyl-(1->6)-beta-D-glucoside).
  • A configuration-inverting rhamnosyltransferase that converts flavonol 3-O-glucosides to 3-O-rutinosides.
  • Also acts, more slowly, on rutin, quercetin 3-O-galactoside and flavonol 3-O-rhamnosides.
 1 I1LCI8
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