The genome of epsilon15, a serotype-converting, Group E1 Salmonella enterica-specific bacteriophage.

The genome sequence of the Salmonella enterica serovar Anatum-specific, serotype-converting bacteriophage epsilon15 has been completed. The nonredundant genome contains 39,671 bp and 51 putative genes. It most closely resembles the genome of phiV10, an Escherichia coli O157:H7-specific temperate phage, with which it shares 36 related genes. More distant relatives include the Burkholderia cepacia-specific phage, BcepC6B (8 similar genes), the Bordetella bronchiseptica-specific phage, BPP-1 (8 similar genes) and the Photobacterium profundum prophage, P Pphipr1 (6 similar genes). epsilon15 gene identifications based on homologies with known gene families include the terminase small and large subunits, integrase, endolysin, two holins, two DNA methylase enzymes (one adenine-specific and one cytosine-specific) and a RecT-like enzyme. Genes identified experimentally include those coding for the serotype conversion proteins, the tail fiber, the major capsid protein and the major repressor. epsilon15's attP site and the Salmonella attB site with which it interacts during lysogenization have also been determined.

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