%0 Journal Article %A Jantzen, Erik. %A Lassen, Jørgen. %T Characterization of Yersinia Species by Analysis of Whole-Cell Fatty Acids %D 1980 %J International Journal of Systematic and Evolutionary Microbiology, %V 30 %N 2 %P 421-428 %@ 1466-5034 %R https://doi.org/10.1099/00207713-30-2-421 %I Microbiology Society, %X The cellular fatty acid composition of Yersinia enterocolitica (50 strains, including all recognized biovars), Y. pseudotuberculosis (7 strains), and Y. pestis (1 strain) was determined by gas-liquid chromatography. All species showed a generally similar pattern characterized by relatively large amounts of 3-OH-14:0, 16:1, 16:0, 17:0-cyclo, and 18:1. The heterogeneity of Y. enterocolitica as revealed by biochemical reactions and by deoxyribonucleic acid-deoxyribonucleic acid hybridization was not found to be reflected in the fatty acid composition. Only small interspecies differences were detected. Y. enterocolitica differed slightly from Y. pseudotuberculosis by its higher concentrations of 12:0, 16:0, and 17:0 and its lower content of 14:0. Y. pestis was characterized by its high content of 18: 1, low content of 15:0, and absence of 13:0. A reference group of five Salmonella typhi strains showed a fatty acid pattern grossly comparable to that of yersiniae, but the following differences were noted: the presence in S. typhi of an additional compound, 2-OH-14:0, relatively high concentrations of 14:0 and 16:0, and low amounts of 15:0, 16:0, and 17:0. Thus, the genus Yersinia appears relatively homogeneous with respect to fatty acid composition, and the present results do not support per se a splitting of Y. enterocolitica into additional species. Furthermore, the high degree of similarity of the fatty acid patterns of yersiniae and S. typhi agrees well with the present placement of Yersinia in the family Enterobacteriaceae. %U https://www.microbiologyresearch.org/content/journal/ijsem/10.1099/00207713-30-2-421