title: Fatty acid composition of Simonsiella strains.
abstract: Gas-liquid chromatography of methyl esters of bound fatty acids extracted from the cells of 48 Simonsiella strains showed that these aerobic, gliding, multicellular-filamentous bacteria have fatty acid profiles of the pattern considered typical of Gram-negative eubacteria. All strains contained predominantly tetradecanoic acid (29.5%), 9-hexadecenoic acid (22.2%), an unidentified acid with an equivalent chain length of approximately 20 carbon atoms (15.8%), and dodecanoic acid (11.4%). Discriminant analysis of the mean relative percentages of 12 fatty acids correctly assigned 94% of the strains to groups based on their source of origin (i.e., the oral cavities of sheep, cat, human or dog); the relative amounts of only 3 of the fatty acids (9-octadecenoic acid, hexadecanoic acid, and tetradecanoic acid) provided most of this discrimination.
mesh_terms: D000818:Animals; D002415:Cats; D004285:Dogs; D005227:Fatty Acids / Q000032:analysis*; D006088:Gram-Negative Aerobic Bacteria / Q000032:analysis / Q000145:classification*; D006801:Humans; D009055:Mouth / Q000382:microbiology; D012756:Sheep
chemical_list: D005227:Fatty Acids