Characterization of a large novel phage-like plasmid in Salmonella enterica serovar Typhimurium

FEMS Microbiology Letters
Sophie OctaviaRuiting Lan

Abstract

Salmonella enterica serovar Typhimurium is a food-borne pathogen and a leading cause of gastroenteritis in humans. Recently, we sequenced a phage-type DT108 strain (L945) and found reads with high similarity to both Salmonella typhi strain CT18 plasmid pHCM2 and bacteriophage SSU5. In this study, we completely sequenced the novel phage-like plasmid which was designated as pSTM_Φ. The presence of this phage-like plasmid was examined in a collection of 284 Salmonella Typhimurium isolates using PCR of the parB gene and only one other isolate (L946) was found to carry the phage-like plasmid suggesting that it is infrequently present amongst Salmonella Typhimurium isolates. pSTM_Φ is a circular phage-like plasmid of 107.7 kb encoding 132 coding regions (ORFs) with the majority of the ORFs encoding hypothetical proteins. Comparative analysis with other closely related phage-like plasmids and the SSU5 phage revealed that there were four divergent lineages of phage-like plasmids found in the family of Enterobacteriaceae. In conclusion, pSTM_Φ is a new member of an emerging family of phage-like plasmids.

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Citations

May 13, 2017·Genome Announcements·Anna ColavecchioLawrence Goodridge
Sep 7, 2017·Microbial Drug Resistance : MDR : Mechanisms, Epidemiology, and Disease·Zhenbo XuMark E Shirtliff
May 5, 2020·Nucleic Acids Research·Adele Williamson, Hanna-Kirsti S Leiros
Dec 30, 2016·Antimicrobial Agents and Chemotherapy·Chunping ZhangBaoli Zhu

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