Molecular cloning of a determinant coding for fimbrial antigen F165(1), a Prs-like fimbrial antigen from porcine septicaemic Escherichia coli.
The genetic determinant coding for F165(1) fimbriae was cloned from the chromosome of the porcine Escherichia coli wild-type strain 4787 (O115:K-:H51:F165). The fimbrial determinant was further subcloned into the BamHI site of pACYC184 and a restriction map was established. On Southern hybridization, identity between the chromosomally encoded prs-like determinant of strain 4787 and its cloned counterparts was demonstrated. The cloned F165(1) fimbriae and those of the wild-type strain possessed a major protein subunit of molecular mass 18.5 kDa. Strains expressing F165(1) fimbriae were detected using an F165-specific polyclonal antiserum and caused mannose-resistant haemagglutination and agglutination of Forssman latex beads. Antiserum against the cloned F165(1) fimbriae recognized a 18.5 kDa band in the parent strain 4787.
Harel
J
J
Department of Pathology and Microbiology, Faculty of Veterinary Medicine, University of Montreal, Saint-Hyacinthe, Quebec, Canada.
Forget
C
C
Saint-Amand
J
J
Daigle
F
F
Dubreuil
D
D
Jacques
M
M
Fairbrother
J
J
D000595:Amino Acid Sequence; D000818:Animals; D000942:Antigens, Bacterial / Q000235:genetics*; D016470:Bacteremia / Q000382:microbiology / Q000662:veterinary; D015153:Blotting, Western; D003001:Cloning, Molecular; D004926:Escherichia coli / Q000235:genetics / Q000276:immunology* / Q000648:ultrastructure; D004927:Escherichia coli Infections / Q000382:microbiology / Q000662:veterinary; D010861:Fimbriae, Bacterial / Q000276:immunology* / Q000648:ultrastructure; D008854:Microscopy, Electron; D008969:Molecular Sequence Data; D010957:Plasmids; D015183:Restriction Mapping; D013552:Swine; D013553:Swine Diseases / Q000382:microbiology
D000942:Antigens, Bacterial