Project description:We report here the first finished and annotated genome sequence of a representative of the most epidemiologically successful Yersinia group, Y. enterocolitica subsp. palearctica strain Y11, serotype O:3, biotype 4. This strain is a certified type strain of the German DSMZ collection (DSM no. 13030; Yersinia enterocolitica subsp. palearctica) that was isolated from the stool of a human patient (H. Neubauer, S. Aleksic, A. Hensel, E. J. Finke, and H. Meyer. Int. J. Med. Microbiol. 290:61-64, 2000).
Project description:We work with the bacterium Yersinia enterocolitica, a gastrointestinal pathogen. In this study we characterized a bacterial mutant strain called SOR17. We compared the protein extracts of SOR17 with that of the parental strain JB580v. Bacteria were grown in triplicate for 5 h at 37°C, and following bacterial disruption by French press, proteins were fractionated into soluble or membrane proteins. We also compared total protein extracts of bacteria grown for 16 h at 27°C. Two-dimensional electrophoresis were performed and proteins were stained with Coomassie brilliant blue. Spots whose abundance changed more than 2 fold were excised and sent to mass spectrometry for identification by either MALDI-TOF PMF or LC-MS/MS.
Project description:A multiplex PCR method for rapid and sensitive diagnosis, differentiating three pathogenic Yersinia groups such as the highly pathogenic Y. enterocolitica, including serotype O8, low pathogenic Y. enterocolitica, and Y. pseudotuberculosis, was developed. Four primer pairs were chosen to detect the genes fyuA, ail, inv, and virF, responsible for the virulence in pathogenic Yersinia species. Under the multiplex PCR conditions, the unique band patterns for the highly pathogenic Y. enterocolitica, low pathogenic Y. enterocolitica, and Y. pseudotuberculosis were generated from Yersinia strains. The detection limit of this method was 101-103 CFU per reaction tube. This multiplex PCR method could detect highly pathogenic Y. enterocolitica O8 from the wild rodent fecal samples that were culture-positive. Therefore, the new multiplex PCR method developed in this study is a useful tool for rapid and sensitive diagnosis, distinguishing three pathogenic Yersinia groups.
