title: Lipids and fatty acids of Leptospira interrogans serovar copenhageni virulent strain Shibaura.
abstract: Lipids and fatty acids of Leptospira interrogans serovar copenhageni virulent strain Shibaura were analyzed by thin-layer chromatography, gas-liquid chromatography, gas-mass spectrometry and infrared absorption spectrometry. The virulent cells possessed a characteristic lipid pattern consisting of free fatty acid (FFA) (41.8%), one major unidentified phospholipid (14.8%), phosphatidylethanolamine (PE) (12.9%), cholesteryl ester (CE) (9.3%), lysophosphatidylethanolamine (LPE) (4.9%) and diphosphatidyl-glycerol (DPG) (1.1%). Various fatty acids such as hexadecanoic (26.9%), hexadecenoic (15.4%), octadecenoic (26.5%) and octadecadienoic (27.4%) acids were detected in the FFA. The fatty acid composition of the major unidentified phospholipid distinctly differed from those of other lipids including PE, LPE, DPG and CE, and comprised mainly tetradecadienoic (53.6%), tetradecatrienoic (14.0%) and octadecanoic (13.8%) acids. This phospholipid with a large amount of polyunsaturated fatty acids with chain lengths of 14 carbon atoms was detected only in the lipids of the virulent cells.
authors.affiliation: Laboratory of Technology, National Institute of Health, Tokyo.
authors.forename: A
authors.initials: A
authors.lastname: Moribayashi
authors.forename: N
authors.initials: N
authors.lastname: Goto
authors.forename: Y
authors.initials: Y
authors.lastname: Arimitsu
authors.forename: K
authors.initials: K
authors.lastname: Himeno
authors.forename: S
authors.initials: S
authors.lastname: Tatsuki
mesh_terms: D000096:Acetone; D002725:Chloroform; D002849:Chromatography, Gas; D002855:Chromatography, Thin Layer; D005227:Fatty Acids / Q000032:analysis*; D005231:Fatty Acids, Unsaturated / Q000032:analysis; D008401:Gas Chromatography-Mass Spectrometry; D007921:Leptospira interrogans / Q000737:chemistry* / Q000472:pathogenicity; D008055:Lipids / Q000737:chemistry*; D010743:Phospholipids / Q000737:chemistry; D014774:Virulence / Q000502:physiology
chemical_list: D005227:Fatty Acids; D005231:Fatty Acids, Unsaturated; D008055:Lipids; D010743:Phospholipids; D000096:Acetone; D002725:Chloroform