Colonization Factor Antigen 11, and Belong to Serogroups Other Than 06.

Abstract
Enterotoxigenic strains of Escherichia coli, which belonged to serogroups other than 06 and produced colonization factor antigen II, usually produced only coli surface antigen 3 (CS3) and gave weak mannose-resistant haemagglutination of bovine erythrocytes. A non-autotransferring plasmid, NTP165, from a strain of E. coli 0168. H16 coded for heat-stable enterotoxin, heat-labile enterotoxin and CS antigens. The CS antigens expressed after acquisition of plasmid NTP165 depended on the recipient strain: a biotype A strain of serotype 06. H16 expressed CS1 and CS3; a biotype C strain of serotype 06. H16 expressed CS2 and CS3; strain K12 and strain E19446 of serotype 0139.H28 expressed only CS3. An exceptional wild-type strain, E24377, of serotype 0139.H28 produced CS1 and CS3 when isolated; a variant of E24377 which had lost the plasmid coding for CS antigens produced both CS1 and CS3 after the introduction of NTP165.

This publication has 12 references indexed in Scilit: