A configuration-inverting rhamnosyltransferase that converts flavonol 3-O-glucosides to 3-O-rutinosides. Also acts, more slowly, on rutin, quercetin 3-O-galactoside and flavonol 3-O-rhamnosides.
Cofactor
History
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UDP-beta-L-rhamnose + a flavonol 3-O-beta-D-glucoside = Udp + a flavonol 3-O-(alpha-L-rhamnosyl-(1->6)-beta-D-glucoside).