Bacteriophage ΦCP24R was isolated from raw sewage from a waste treatment plant, and lytic activity was observed against a type A Clostridium perfringens isolate. Electron microscopy revealed a small virion (44-nm-diameter icosahedral capsid) with a short, non-contractile tail, indicative of a member of the family Podoviridae . The phage had a linear, double-stranded DNA genome of 18,919 base pairs (bp) with 41 bp inverted terminal repeats and a type B DNA polymerase, which are characteristics of members of the subfamily Picovirinae . Out of 22 predicted genes in the genome, ten had significant sequence similarity to proteins of known function. Three distinct genes with lytic domains were identified, including a zinc carboxypeptidase domain that has not been previously reported in viruses. The ΦCP24R genome described herein is only the second Clostridium perfringens podovirus genome reported to date.
Archives of Virology – Springer Journals
Published: Apr 1, 2012
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