Open AccessPlasmid content in Yersinia pestis strains of different origin
Author(s) -
Filippov Andrew A.,
Solodovnikov Nikolai S.,
Kookleva Liubov M.,
Protsenko Olga A.
Publication year - 1990
Publication title -
fems microbiology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.899
H-Index - 151
eISSN - 1574-6968
pISSN - 0378-1097
DOI - 10.1111/j.1574-6968.1990.tb13833.x
Subject(s) - plasmid , yersinia pestis , strain (injury) , biology , microbiology and biotechnology , plague (disease) , yersinia , enterobacteriaceae , host (biology) , bacteria , virulence , genetics , escherichia coli , gene , medicine , pathology , anatomy
Plasmid content in 242 Yersinia pestis strains from various natural plague foci of the U.S.S.R. and other coutries was studied. Of these strains, 172 (71%) were shown to carry three plasmids described previously of about 6, 45–50 and 60 MDa, respectively. Twenty strains (8%) from different foci harboured additional cryptic plasmids, most often of about 20 MDa in size. Plasmid pPst displayed considerable constancy of its molecular mass. On the contrary, size variations of pCad (45–49 MDa) and, especially, pFra (60–190 MDa) were found. Molecular mass of these plasmids correlated with the host strain origin.