Le Marrec C, Moreau S, Leret V, Schäffer A, Blanco C, Trautwetter A. Cloning and sequence determination of a phi AAU2 gene whose product aborts the phage lytic cycle.
Res Microbiol 1998;
149:177-88. [PMID:
9766220 DOI:
10.1016/s0923-2508(98)80078-8]
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Abstract
This communication describes the cloning of a 1.8-kb fragment from the genome of the corynephage phi AAU2, which aborts the phage lytic cycle when cloned on a high-copy shuttle vector. The associated phenotype, called Apld (aborting phage lytic development), was revealed by noting the reduced plaque size and lower efficiencies of plaquing of phi AAU2 cp, a virulent derivative of phi AAU2, on "Arthrobacter aureus"-C70 Apld+ cells. Adsorption and phage DNA transfection experiments showed evidence that Apld acted once the phage DNA had entered into the cell; apld was confined to a single open reading frame (ORF), encoding a putative 63-aa polypeptide which did not show any homology to proteins contained in the databanks; apld is followed by an ORF the product of which shows homology with a protein expressed by the early region of the Streptomyces phage phi C31.
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