Expression of CS fimbriae in Escherichia coli strains of human and animal origin belonging to O-serovar 6, K-serovar 15 or H-serovar 16 |
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Authors: | Jane Twohig Maire Boylan Cyril J Smith |
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Institution: | Department of Microbiology, Moyne Institute, Trinity College, Dublin 2, Republic of Ireland |
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Abstract: | Abstract A non-conjugative CS-fimbriae-associated plasmid pCS001 was mobilized into rifampicin-resistant mutants of strains of Escherichia coli of O-serovar 6 or K-serovar 15 or H-serovar 16. By a variety of serological procedures only the production of CS3 fimbriae was detected in transoconjugants. The finding extend previous observations that only strains of E. coli of serotype O6:K15:H16 or H− and of appropriate biotype are able to express either CS1 or CS2 fimbriae, as even a recipient of serotype O6:K15:H31 possessing a rhamnose-positive fermentation phenotype did not express either of these two fimbriae. The results indicate that expression of CS1 or CS2 fimbriae probably involves chromosomal determinants only found in strains of serotype O6:K15:H16 or H−. |
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Keywords: | Colonization factor antigen II CS3 fimbriae Host restricted expression of CS fimbriae Enterotoxigenic Escherichia coli |
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