Reaction: UDP-glucose + 7,8-dihydroxycoumarin = UDP + daphnin
Other name(s): uridine diphosphoglucose-o-dihydroxycoumarin 7-O-glucosyltransferase; UDP-glucose:o-dihydroxycoumarin glucosyltransferase
Systematic name: UDP-glucose:7,8-dihydroxycoumarin 7-O-β-D-glucosyltransferase
Comments: Converts the aglycone daphetin into daphnin and, more slowly, esculetin into cichoriin, umbelliferone into skimmin, hydrangetin into hydrangin and scopoletin into scopolin.
Links to other databases: BRENDA, EXPASY, KEGG, Metacyc, CAS registry number: 74114-37-7
1. Ibrahim, R.K. and Boulay, B. Purification and some properties of UDP-glucose:o-hydroxycoumarin 7-O-glucosyltransferase from tobacco cell cultures. Plant Sci. Lett. 18 (1980) 177-184.