A new major outer membrane protein in derivatives of Escherichia coli carrying the virulence plasmid ColV-K94.
Strains of Escherichia coli K12 harbouring ColV-K94 contain a new major outer membrane protein of molecular weight ca. 33,000. The new protein resembles the Omp A protein in that (1) it is trypsin-sensitive in membrane preparations and (2) it is not murein-associated. The new protein cannot, however, replace the Omp A protein as a functional receptor for the phages K3 and TuII*, for colicin L or for efficient conjugation with F-like donors. The new protein is apparently not a transfer component and is produced by cells unable to produce colicin. Labelling experiments with minicells suggest that the new protein is one of two major plasmid-encoded membrane proteins.
D001425:Bacterial Outer Membrane Proteins; D001426:Bacterial Proteins / Q000032:analysis*; D003086:Bacteriocin Plasmids; D003087:Colicins / Q000378:metabolism; D003227:Conjugation, Genetic; D004926:Escherichia coli / Q000032:analysis* / Q000235:genetics; D008565:Membrane Proteins / Q000032:analysis* / Q000235:genetics / Q000502:physiology; D008970:Molecular Weight; D010957:Plasmids; D011991:Receptors, Virus / Q000502:physiology; D014357:Trypsin / Q000494:pharmacology
D001425:Bacterial Outer Membrane Proteins; D001426:Bacterial Proteins; D003087:Colicins; D008565:Membrane Proteins; D011991:Receptors, Virus; D014357:Trypsin