Reaction: UDP-α-D-glucose + 1,2-diacyl-3-O-(α-D-glucopyranosyl)-sn-glycerol = 1,2-diacyl-3-O-[α-D-glucopyranosyl-(1→2)-O-α-D-glucopyranosyl]-sn-glycerol + UDP
Other name(s): monoglucosyl diacylglycerol (1→2) glucosyltransferase; MGlcDAG (1→2) glucosyltransferase; DGlcDAG synthase (ambiguous); UDP-glucose:1,2-diacyl-3-O-(α-D-glucopyranosyl)-sn-glycerol (1→2) glucosyltransferase; diglucosyl diacylglycerol synthase
Systematic name: UDP-α-D-glucose:1,2-diacyl-3-O-(α-D-glucopyranosyl)-sn-glycerol 2-glucosyltransferase
Comments: The enzyme from Acholeplasma laidlawii requires Mg2+.
Links to other databases: BRENDA, EXPASY, KEGG, MetaCyc, CAS registry number: 168680-19-1
References:
1. Karlsson, O.P., Rytomaa, M., Dahlqvist, A., Kinnunen, P.K., Wieslander, A. Correlation between bilayer lipid dynamics and activity of the diglucosyldiacylglycerol synthase from Acholeplasma laidlawii membranes. Biochemistry 35 (1996) 10094-10102. [PMID: 8756472]