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  • Title: A new major outer membrane protein in derivatives of Escherichia coli carrying the virulence plasmid ColV-K94.
    Author: Moores JC, Rowbury RJ.
    Journal: Z Allg Mikrobiol; 1982; 22(7):465-75. PubMed ID: 6760568.
    Abstract:
    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.
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