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Characterization and complete genome sequence analysis of Staphylococcus aureus bacteriophage JS01

Jia, Hongying, Dong, Wenyang, Yuan, Lvfeng, Ma, Jiale, Bai, Qinqin, Pan, Zihao, Lu, Chengping, Yao, Huochun
Virus genes 2015 v.50 no.2 pp. 345-348
DNA replication, Staphylococcus aureus, bacteriophages, biological control agents, bovine mastitis, dairy cows, genome, genomics, herds, host range, lysogeny, milk, nucleotide sequences, pathogenicity, pathogens, prediction, sequence analysis, transfer RNA, transmission electron microscopy
Staphylococcus aureus is a primary pathogen that causes bovine mastitis resulting in serious economic losses and herd management problems in dairy cows. A novel bacteriophage, JS01, specifically infecting bovine S. aureus, was isolated from milk of mastitis-affected cattle. TEM observation showed that it belonged to the family Siphovirus. The JS01 strain demonstrated a broad host range. The prediction result of PHACTS suggested that the JS01 strain was temperate phage. The JS01 genome is 43,458 bp long, with a GC content of 33.32 % and no tRNAs. Annotation and functional analysis of the predicted ORFs revealed six functional groups: structure and morphology, DNA replication and regulation, packaging, lysogeny, lysis, and pathogenicity. Comparative analysis between JS01, S. aureus MSSA476, and S. aureus prophage PVL was also performed. The characterization and genomic analysis of JS01 provide a better understanding of S. aureus-targeting bacteriophages and useful information for the development of phage-based biocontrol agents against S. aureus.