mgs

Alpha-monoglucosyldiacylglycerol synthase

398 amino acids

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.

Belongs to the glycosyltransferase group 1 family. Glycosyltransferase 4 subfamily.

45.166 kDa

MRIGIFSEAYLPLISGVVTSVVNLKEGLEALGHEVYVITPIPSKDKFENDPSVIRIPGWVIPRKSLKGFRLVLFVKRYVRKMRKLKLDVVHIHTEFSMGKLGLAVAKKERIPSVYTLHTSYQDYTHYVSKLLTRFAPNAAKKLAGKINNQYTKNCHMTIVPTKKIYDKMIRLKHDGEFTIIPSGINLKPFYKSSYTSEQVQALKDKLGIRNDEFVAILVARIAKEKSIGDLVEAFVEFYKSYPNSRFIIIGDGPDKPVLDKLIDSKKASKYINTLGFVKNAEVGLYYQIADVFLNASTTETQGLTYVEALAASLPIIVRYDDVFDAFVEDGKNGIFFNKNEELVKHLIHIRQNPEILGTLSKNAEISTKPYAKEVYAKSCETLYLDLIDKNNKKLNKK

mgs

Mannosylglycerate synthase

397 amino acids

Involved in the biosynthesis of the stress protectant 2-O-alpha-D-mannosyl glycerate (MG) which is produced in response to growth at supraoptimal temperature and salinity, and protects several enzymes against inactivation by temperature, freeze-drying and osmotic stress. Catalyzes the condensation of alpha-GDP-D-mannose (GDP-Man) with D-glycerate to produce alpha-mannosyl-D-glycerate. It is specific for GDP-Man, but it can also use alpha-GDP-D-glucose (GDP-Glc), beta-GDP-D-fructose, alpha-UDP-D-mannose and alpha-UDP-D-glucose as sugar donors. It is specific for D-glycerate, but it can also use D-lactate and glycolate as sugar acceptors. This reaction occurs with a net retention of anomeric configuration; the newly formed glycosidic linkage has the same alpha configuration as the sugar donor.

Belongs to the glycosyltransferase 78 family.

46.126 kDa

MSLVVFPFKHEHPEVLLHNVRVAAAHPRVHEVLCIGYERDQTYEAVERAAPEISRATGTPVSVRLQERLGTLRPGKGDGMNTALRYFLEETQWERIHFYDADITSFGPDWITKAEEAADFGYGLVRHYFPRASTDAMITWMITRTGFALLWPHTELSWIEQPLGGELLMRREVAAMLYEDERVRRRSDWGIDTLYTFVTVQQGVSIYECYIPEGKAHRLYGGLDDLRTMLVECFAAIQSLQHEVVGQPAIHRQEHPHRVPVHIAERVGYDVEATLHRLMQHWTPRQVELLELFTTPVREGLRTCQRRPAFNFMDEMAWAATYHVLLEHFQPGDPDWEELLFKLWTTRVLNYTMTVALRGYDYAQQYLYRMLGRYRYQAALENGRGHPVPPRAALSTA