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1 Friedrich-Loeffler-Institut, Naumburgerstr. 96a, D-07743 Jena, Germany
2 Bundeswehr Institut für Mikrobiologie, Abteilung für Bakteriologie, Neuherbergstr. 11, D-80937 München, Germany
3 Institut für Bakteriologie, Mykologie und Hygiene, Veterinärplatz 1, A-1210 Wien, Austria
Correspondence
Lisa D. Sprague
natter13{at}gmx.de
Strains originally identified phenotypically as members of the species Yersinia pseudotuberculosis were subjected to a more detailed classification employing 16S rRNA gene sequence analysis, DNA–DNA hybridization, determination of the DNA base composition and phenotypic characterization. The quinone system, consisting of the predominant compound ubiquinone Q-8 and minor amounts of menaquinone MK-8, the major components of the polar lipid profile, as well as the polyamine pattern, with putrescine as the major compound, supported the assignment of the strains to the genus Yersinia. Based on DNA–DNA relatedness, a specific 16S rRNA gene sequence type, absence of melibiose fermentation and a polar lipid profile lacking phosphatidylmonomethylethanolamine and two aminolipids, the strains were identified as members of a novel species for which the name Yersinia similis sp. nov. is proposed. The type strain of Yersinia similis sp. nov. is strain Y228T (=CCUG 52882T=LMG 23763T).
A supplementary table detailing DNA–DNA hybridization values between strains of Yersinia pseudotuberculosis and strains Y228T, Y233 and Y252 is available with the online version of this paper.
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