Alpha-monoglucosyldiacylglycerol synthase

UniProtKB accession:  Q93P60

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UniProtKB description:  Glucosyltransferase involved in the biosynthesis of the non-bilayer-prone membrane lipid alpha-monoglucosyldiacylglycerol. This is a major component for maintaining a certain anionic lipid surface charge density, for balancing the bilayer to non-bilayer phase equilibria and for keeping a constant lipid bilayer spontaneous curvature (curvature packing stress). Catalyzes the transfer of a glucosyl residue from UDP-Glc to diacylglycerol (DAG) acceptor to form the corresponding alpha-glucosyl-DAG (1,2-diacyl-3-O-(alpha-D-glucopyranosyl)-sn-glycerol). It can only use UDP-Glc as sugar donor and DAG is the preferred substrate.