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Sugar phosphates transesterification

The identification of permethylated sugar acids and sugar phosphates by g.c.-m.s. has been assisted by transesterification with sodium ethoxide. Methyl ester groups were thus changed to... [Pg.247]

Fig. 8. Head-group additions to ceramide in a schematic representation. Starting with a given molecular subspecies of ceramide (Fig. 7), head groups can be added to make sphingomyelin by addition of a phospho-choline moiety (by transesterification from phosphatidylcholine), phosphate (from ATP), glucose (from UDP-Glc), galactose (from UDP-Gal), or a fatty acid (by transacylation from phosphatidylcholine or phosphatidylethanolamine). Subsequent metabolites are formed by sequential carbohydrate addition (from UDP-sugars except for GDP-fucose, GDP-mannose and CMP-sialic acid) or addition of sulfate. Fig. 8. Head-group additions to ceramide in a schematic representation. Starting with a given molecular subspecies of ceramide (Fig. 7), head groups can be added to make sphingomyelin by addition of a phospho-choline moiety (by transesterification from phosphatidylcholine), phosphate (from ATP), glucose (from UDP-Glc), galactose (from UDP-Gal), or a fatty acid (by transacylation from phosphatidylcholine or phosphatidylethanolamine). Subsequent metabolites are formed by sequential carbohydrate addition (from UDP-sugars except for GDP-fucose, GDP-mannose and CMP-sialic acid) or addition of sulfate.
See other pages where Sugar phosphates transesterification is mentioned: [Pg.155]    [Pg.93]    [Pg.387]    [Pg.154]    [Pg.289]    [Pg.3184]    [Pg.751]    [Pg.172]    [Pg.249]   
See also in sourсe #XX -- [ Pg.235 ]



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