2.4.1.240: flavonol-3-O-glycoside glucosyltransferase

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

UDP-glucose:glucosyltransferase

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Results	in table
1	CAS Registry Number
1	Cofactor
2	Inhibitors
2	KM Value [mM]
1	Metals/Ions
2	Natural Substrates/ Products (Substrates)
2	Organism
4	Pathway
3	pH Optimum
1	Purification (Commentary)
2	Reaction
1	Reaction Type
2	Reference
3	Source Tissue
1	Specific Activity [micromol/min/mg]
2	Storage Stability
11	Substrates and Products (Substrate)
1	Synonyms
1	Systematic Name
2	Temperature Optimum [°C]

Substrates Products on EC 2.4.1.240 - flavonol-3-O-glycoside glucosyltransferase

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TDP-glucose + a flavonol 3-O-beta-D-glucosyl-(1-2)-beta-D-glucoside

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

3fold lower rate than with UDP-glucose as glucosyl donor

UDP-glucose + a flavonol 3-O-beta-D-glucosyl-(1-2)-beta-D-glucoside

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

highly specific enzyme, specific for flavonol-3-O-diglucosides, 3fold higher rate than with TDP-glucose as glucosyl donor

UDP-glucose + kaempferol 3-O-beta-D-glucosyl-(1-2)-beta-D-glucoside

UDP + kaempferol 3-O-beta-D-glucosyl-(1-2)-beta-D-glucosyl-(1-2)-beta-D-glucoside

UDP-glucose + myricetin 3-O-beta-D-glucosyl-(1-2)-beta-D-glucoside

UDP + myricetin 3-O-beta-D-glucosyl-(1-2)-beta-D-glucosyl-(1-2)-beta-D-glucoside

32% of the activity with kaempferol 3-O-beta-D-glucosyl-(1-2)-beta-D-glucoside

UDP-glucose + quercetin 3-O-beta-D-glucosyl-(1-2)-beta-D-glucoside

UDP + quercetin 3-O-beta-D-glucosyl-(1-2)-beta-D-glucosyl-(1-2)-beta-D-glucoside

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