Characterization of a Novel Panton-Valentine leukocidin (PVL)-encoding staphylococcal phage and its naturally PVL-lacking variant.

ABSTRACT: A new siphophage (LH1) was isolated from raw milk using a Staphylococcus aureus ST352 host. Its genome (46,048 bp, 57 open reading frames) includes the two genes encoding Panton-Valentine leukocidin (PVL), a virulence factor usually harbored by S. aureus prophages. Nine structural proteins were identified, including a tail protein generated through a +1 frameshift. A phage lytic mutant was isolated, and its analysis revealed the deletion of genes coding for the PVL and an integrase. The deletion likely occurred through recombination between direct repeats.

SUBMITTER: El Haddad L 

PROVIDER: S-EPMC3623202 | biostudies-literature | 2013 Apr

REPOSITORIES: biostudies-literature