title: Structures of glucolipids from the membrane of Acholeplasma laidlawii strain A-EF22. I. Glycerophosphoryldiglucosyldiacylglycerol and monoacylbisglycerophosphoryldiglucosyldiacylglycerol.
abstract: The structures of two phosphoglucolipids from the membrane of Acholeplasma laidlawii, strain A-EF22 were determined by high resolution 13C-, 31P- and 1H-NMR. The lipids in question are 1,2-diacyl-3-O-[glycerophosphoryl-6-O-(alpha-D-glucopyranosyl- (1-->2)-O-alpha-D-glucopyranosyl)]-sn-glycerol (1) and 1,2-diacyl-3-O-[glycerophosphoryl-6-O-(alpha-D-glucopyranosyl-(1-- >2)- monoacyl-glycerophosphoryl-6-O-alpha-D-glucopyranosyl)]-sn-glycero l (2). Both lipids are thus derivatives of diglucosyldiacylglycerol. Previous reports on these lipids, based on insufficient chemical analyses, showed contradictory structures. A phosphoglycolipid having the structure of 2 has not been described previously.
authors.affiliation: Department of Physical Chemistry, Umeå University, Sweden.
authors.forename: J B
authors.initials: JB
authors.lastname: Hauksson
authors.forename: G
authors.initials: G
authors.lastname: Lindblom
authors.forename: L
authors.initials: L
authors.lastname: Rilfors
mesh_terms: D000128:Acholeplasma laidlawii / Q000737:chemistry*; D002240:Carbohydrate Sequence; D006017:Glycolipids / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D008969:Molecular Sequence Data; D015394:Molecular Structure; D050178:Monoglycerides
chemical_list: D006017:Glycolipids; D050178:Monoglycerides; C002883:glycerophosphoryl diglucosyl diglyceride; C089530:monoacyl bisglycerophosphoryl diglucosyl diacylglycerol