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  • Title: N-methyl groups in bacterial lipids. 3. Phospholipids of hyphomicrobia.
    Author: Goldfine H, Hagen P.
    Journal: J Bacteriol; 1968 Feb; 95(2):367-75. PubMed ID: 5640378.
    Abstract:
    The phospholipids of Hyphomicrobium vulgare NQ-521 have been separated by preparative thin-layer chromatography and analyzed by paper chromotography of the water-soluble products of acid and mild alkaline hydrolysis. The principal phospholipids are phosphatidyl ethanolamine (23%), phosphatidyl N,N'-dimethylethanolamine (36%), lecithin (29%), and phosphatidyl glycerol (10%). Three other strains of Hyphomicrobium were found to have similar phospholipid compositions. Growing cells incorporated the methyl group of methionine into lipid-bound N,N'-dimethylethanolamine and choline. Experiments with sonic extracts of H. vulgare NQ-521 and (14)C (methyl) S-adenosylmethionine demonstrated the formation of phosphatidyl N-monomethylethanolamine in addition to the dimethylethanolamine and choline phosphatides.
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