title: Bacteriophage CP-T1 of Vibrio cholerae. Identification of the cell surface receptor.
abstract: The attachment site on the cell surface of Vibrio cholerae for the bacteriophage CP-T1 has been determined. Purified lipopolysaccharide from the Inaba and Ogawa serotypes, and of both the Classical and El Tor biotype of strains of V. cholerae show equal phage-inactivating capacities. Lipopolysaccharide extracted from a CP-T1-resistant mutant has no phage-inactivating capacity. Such mutants lack O-antigen as demonstrated by bactericidal assays utilizing a monoclonal antibody directed against O-antigen side chain of V. cholerae lipopolysaccharide. Radiolabelling of lipopolysaccharide with 33P and analysis by sodium dodecyl sulfate/polyacrylamide gel electrophoresis also revealed the absence of O-antigen in phage-resistant strains. A number of V. cholerae typing phage show cross-resistance with phage CP-T1.
mesh_terms: D000911:Antibodies, Monoclonal; D001435:Bacteriophages / Q000276:immunology / Q000378:metabolism*; D004591:Electrophoresis, Polyacrylamide Gel; D008070:Lipopolysaccharides / Q000276:immunology / Q000378:metabolism*; D009154:Mutation; D009693:Nucleic Acid Hybridization; D011991:Receptors, Virus / Q000378:metabolism*; D014734:Vibrio cholerae / Q000276:immunology / Q000378:metabolism*
chemical_list: D000911:Antibodies, Monoclonal; D008070:Lipopolysaccharides; D011991:Receptors, Virus