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Characterization and complete genome sequence of a novel N4-like bacteriophage, pSb-1 infecting Shigella boydii

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Issue Date
2014-10
Publisher
Elsevier BV
Citation
Research in Microbiology, Vol.165 No.8, pp.671-678
Abstract
Shigellosis is one of major foodborne pathogens in both developed and developing countries. Although antibiotic therapy is considered an effective treatment for shigellosis, the imprudent use of antibiotics has led to the increase of multiple-antibiotic-resistant Shigella species globally. In this study, we isolated a virulent Podoviridae bacteriophage (phage), pSb(-1), that infects Shigella boydii. One-step growth analysis revealed that this phage has a short latent period (15 min) and a large burst size (152.63 PFU/cell), indicating that pSb(-1) has good host infectivity and effective lytic activity. The double-stranded DNA genome of pSb(-1) is composed of 71,629 bp with a G + C content of 42.74%. The genome encodes 103 putative ORFs, 9 putative promoters, 21 transcriptional terminators, and one tRNA region. Genome sequence analysis of pSb(-1) and comparative analysis with the homologous phage EC1-UPM, N4-like phage revealed that there is a high degree of similarity (94%, nucleotide sequence identity) between pSb(-1) and EC1-UPM in 73 of the 103 ORFs of pSb(-1). The results of this investigation indicate that pSb(-1) is a novel virulent N4-like phage infecting S. boydii and that this phage might have potential uses against shigellosis. (C) 2014 Institut Pasteur. Published by Elsevier Masson SAS. All rights reserved.
ISSN
0923-2508
URI
https://hdl.handle.net/10371/179661
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College of Veterinary Medicine (수의과대학)Dept. of Veterinary Medicine (수의학과)Journal Papers (저널논문_수의학과)
College of Veterinary Medicine (수의과대학)Dept. of Veterinary Medicine (수의학과)Journal Papers (저널논문_수의학과)
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