| EC |
2.4.1.91 |
| Accepted name: |
flavonol 3-O-glucosyltransferase |
| Reaction: |
UDP-glucose + a flavonol = UDP + a flavonol 3-O-β-D-glucoside |
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For diagram of kaempferol biosynthesis, click here and for diagram of the biosynthesis of quercetin 3-O-glycoside derivatives, click here |
| Other name(s): |
GTI; uridine diphosphoglucose-flavonol 3-O-glucosyltransferase; UDP-glucose:flavonol 3-O-glucosyltransferase; UDPG:flavonoid-3-O-glucosyltransferase |
| Systematic name: |
UDP-glucose:flavonol 3-O-D-glucosyltransferase |
| Comments: |
Acts on a variety of flavonols, including quercetin and quercetin 7-O-glucoside. Different from EC 2.4.1.81 (flavone 7-O-β-glucosyltransferase). |
| Links to other databases: |
BRENDA, EXPASY, Gene, KEGG, MetaCyc, PDB, CAS registry number: 50812-18-5 |
| References: |
| 1. |
Kleinehollenhorst, G., Behrens, H., Pegels, G., Srunk, N. and Wiermann, R. Formation of flavonol 3-O-diglycosides and flavonol 3-O-triglycosides by enzyme extracts from anthers of Tulipa cv apeldoorn - characterization and activity of 3 different O-glycosyltransferases during anther development. Z. Natursforsch. C: Biosci. 37 (1982) 587–599. |
| 2. |
Sutter, A. and Grisebach, H. UDP-glucose: flavonol 3-O-glucosyltransferase from cell suspension cultures of parsley. Biochim. Biophys. Acta 309 (1973) 289–295. [DOI] [PMID: 4731963] |
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| [EC 2.4.1.91 created 1976] |
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