Reaction: UDP-α-D-apiose + apigenin 7-O-β-D-glucoside = UDP + apigenin 7-O-[β-D-apiosyl-(1→2)-β-D-glucoside]
For diagram click here.
Glossary: apigenin = 5,4',7-trihydroxyflavone
β-D-apiose = (2R,3R,4R)-4-(hydroxymethyl)tetrahydrofuran-2,3,4-triol
Other name(s): uridine diphosphoapiose-flavone apiosyltransferase; UDPapiose:7-O-(β-D-glucosyl)-flavone apiosyltransferase; UDP-apiose:5,4'-dihydroxyflavone 7-O-β-D-glucoside 2"-O-β-D-apiofuranosyltransferase
Systematic name: UDP-apiose:4',5-dihydroxyflavone 7-O-β-D-glucoside 2"-O-β-D-apiofuranosyltransferase
Comments: 7-O-β-D-Glucosides of a number of flavonoids and of 4-substituted phenols can act as acceptors.
Links to other databases: BRENDA, EXPASY, KEGG, Metacyc, CAS registry number: 37332-49-3
References:
1. Ortmann, R., Sutter, A. and Grisebach, H. Purification and properties of UDPapiose: 7-O-(β-D-glucosyl)-flavone apiosyltransferase from cell suspension cultures of parsley. Biochim. Biophys. Acta 289 (1972) 293-302. [PMID: 4650134]