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Diffuse adherence, ST-I enterotoxin and CFA/IV colonization factor are encoded by the same plasmid in the Escherichia coli O29: H21 strai
Braz. j. med. biol. res ; 29(8): 969-76, Aug. 1996. ilus, tab
Article in English | LILACS | ID: lil-187366
ABSTRACT
Escherichia coli O29H21 is a human enterotoxigenic serotype that produces heat-stable (ST-I) enterotoxin, adheres diffusely to HeLa cells, and presents colonization factor antigen IV (CFA/IV) composed of CS5CS6 surface antigens. In one strain studied the genes for diffuse adherence and CFA/IV (CS5CS6) production were found to be present in the same plasmid encoding ST-I. The virulence plasmid (Ent) presented two unrelated basic replicons homologous to repFIC and repW. Gene(s) encoding diffuse adherence did not share homology with the probe for F1845 fimbrial adhesin which is responsible for this phenotype in other E. coli strains. Ent plasmid containing genes for diffuse adherence have not been described previously.
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Index: LILACS (Americas) Main subject: Plasmids / Enterotoxins / Escherichia coli / Antigens, Bacterial Language: English Journal: Braz. j. med. biol. res Journal subject: Biology / Medicine Year: 1996 Type: Article

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Index: LILACS (Americas) Main subject: Plasmids / Enterotoxins / Escherichia coli / Antigens, Bacterial Language: English Journal: Braz. j. med. biol. res Journal subject: Biology / Medicine Year: 1996 Type: Article