Reaction: 2 1-O-galloyl-β-D-glucose = D-glucose + 1-O,6-O-digalloyl-β-D-glucose
Systematic name: 1-O-galloyl-β-D-glucose:1-O-galloyl-β-D-glucose O-galloyltransferase
Comments: β-Glucogallin can act as donor and as acceptor. Digalloylglucose can also act as acceptor, with the formation of 1-O,2-O,6-O-trigalloylglucose
Links to other databases: BRENDA, EXPASY, KEGG, Metacyc, CAS registry number: 87502-55-4
1. Denzel, K., Schilling, G. and Gross, G.G. Biosynthesis of gallotannins - enzymatic conversion of 1,6-digalloylglucose to 1,2,6-trigalloylglucose. Planta 176 (1988) 135-137.
2. Gross, G.G. Synthesis of mono-galloyl-β-D-glucose di-galloyl-β-D-glucose and trigalloyl-β-D-glucose by β-glucogallin-dependent galloyltransferases from oak leaves. Z. Natursforsch. C: Biosci. 38 (1983) 519-523.