The Gram-negative bacterium Proteus mirabilis causes a large proportion of catheter-associated urinary tract infections (CAUTIs), which are among the world's most common nosocomial infections. Here, we characterize P. mirabilis bacteriophage Privateer, a prolate podophage of the C3 morphotype isolated from Texas wastewater treatment plant activated sludge. Basic characterization assays demonstrated Privateer has a latent period of ~40 minutes and average burst size around 100. In the 90.7 kb Privateer genome, 43 functions were assigned for the 144 predicted protein-coding genes. Genes encoding DNA replication proteins, DNA modification proteins, four tRNAs, lysis proteins, and structural proteins were identified. Cesium-gradient purified Privateer particles analyzed via LC-MS/MS verified the presence of several predicted structural proteins, including the major capsid protein and a longer, minor capsid protein apparently produced by translational frameshift. Comparative analysis demonstrated Privateer shares 83% nucleotide similarity with Cronobacter phage vB_CsaP_009, but low nucleotide similarity with other known phages. Predicted structural proteins in Privateer appear to have evolutionary relationships with other prolate podophages, in particular the Kuraviruses.
[doi:10.25345/C5DZ18]
[dataset license: CC0 1.0 Universal (CC0 1.0)]
Keywords: bacteriophage, genomics, proteus
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Ryland Young, Ph.D., Texas A&M University, United States |
Submitting User: | stweintraub |
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