2.4.1.239: flavonol-3-O-glucoside glucosyltransferase

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For detailed information about flavonol-3-O-glucoside glucosyltransferase, go to the full flat file.

Reaction

a flavonol 3-O-beta-D-glucosyl-(1->2)-beta-D-glucoside

Synonyms

flavonol 3-O-glucoside/galactoside (1->2) glucosyltransferase, GmF3G2''Gt, UDP-glucose:glucosyltransferase, UGT79B30

ECTree

2 Transferases

2.4 Glycosyltransferases

2.4.1 Hexosyltransferases

2.4.1.239 flavonol-3-O-glucoside glucosyltransferase

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2	AA Sequence
1	CAS Registry Number
1	Cloned(Commentary)
1	Cofactor
2	General Information
2	Inhibitors
2	KM Value [mM]
1	Metals/Ions
2	Natural Substrates/ Products (Substrates)
3	Organism
6	Pathway
2	pH Optimum
1	Protein Variants
1	Purification (Commentary)
2	Reaction
1	Reaction Type
3	Reference
4	Source Tissue
1	Specific Activity [micromol/min/mg]
2	Storage Stability
15	Substrates and Products (Substrate)
4	Synonyms
1	Systematic Name
2	Temperature Optimum [°C]

Systematic Name

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Systematic Name on EC 2.4.1.239 - flavonol-3-O-glucoside glucosyltransferase

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UDP-glucose:flavonol-3-O-beta-D-glucoside 2''-O-beta-D-glucosyltransferase

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, flavonol 3-O-glucosyltransferase and EC 2.4.1.240, flavonol-3-O-glycoside glucosyltransferase). TDP-glucose can replace UDP-glucose as the glucose donor but the reaction proceeds more slowly.