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- W3213057345 abstract "The paper analyzes the siderophore biosynthesis genes that are located in the ysu and ynp loci of only Y. pestis and Y. pseudotuberculosis, have variable structure between different strains of both species and contain previously unknown variable number tandem repeats (VNTR). The purpose of the study was to assess the possibility of using these VNTR as genetic markers for intra-and interspecific differentiation of pathogenic Yersinia. Based on the novel VNTR-markers, three pairs of primers (ysu-interF/R, ilp1F/R и ilp2F/R) were designed and used for the in silico and in vitro PCR analysis of various Y.pestis and Y. pseudotuberculosis strains. All studied Y. pestis strains of the main subspecies (ssp pestis), unlike the strains of non-main subspecies and Y. pseudotuberculosis, did not give amplicon with ilp1F/R primers, since the area between them contains an IS100 element. To identify the strains of the main subspecies, the fourth pair of primers ilp1F-is100R was designed, allowing the most dangerous ssp pestis strains to be distinguished from the not dangerous non-main ssp strains. Y. pseudotuberculosis strains were characterized by a significant variety of amplicons with three pairs of primers, and which made it possible to carry out intraspecies strain genotyping. At the same time, for those strains whose serotype is known, the correlation between the serogroup and the genotype of the strains was observed. Analysis of the 1 serotype strains representing most sequenced Y. pseudotuberculosis strains allowed us to separate two gene groups differing from the rest of 1 serotype gene groups. The first one included the serotype 1a strains isolated from people in Europe, which are known to have the greatest pathogenetic potential. The other one was formed by serotype 1b strains isolated from people in Siberia and Primorye, which are characterized by the high epidemic potential. Thus, four pairs of primers designed in this study can be used to develop additional tests for the identification and differential diagnostics of the most dangerous Y. pestis ssp pestis and Y. pseudotuberculosis serotype 1a and 1b strains." @default.
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- W3213057345 date "2021-07-06" @default.
- W3213057345 modified "2023-09-26" @default.
- W3213057345 title "Using the structural diversity of siderophore biosynthesis genes for intra-and interspecific differentiation of pathogenic yersinia" @default.
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- W3213057345 doi "https://doi.org/10.33920/med-08-2108-07" @default.
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