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  • Title: Con--mutants: class of mutants in Escherichia coli K-12 lacking a major cell wall protein and defective in conjugation and adsorption of a bacteriophage.
    Author: Skurray RA, Hancock RE, Reeves P.
    Journal: J Bacteriol; 1974 Sep; 119(3):726-35. PubMed ID: 4604263.
    Abstract:
    We describe a new class of mutants of Escherichia coli K-12 defective in conjugation (Con(-) mutants). They lack a major protein of the outer membrane and are defective as recipients with Hfr and F' donors and as recipients for several F-like R factors and Col factors. In the case of crosses with an Hfr donor, we have shown that the Con(-) recipient is defective in pair formation. The mutants are resistant to certain phages due to loss of receptor activity.
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