| Title | Characterization of a Salmonella Enteritidis bacteriophage showing broad lytic activity against Gram-negative enteric bacteria |
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| Author | Shukho Kim1, Sung-Hun Kim2, Marzia Rahman1, and Jungmin Kim1* |
| Address | 1Department of Microbiology, School of Medicine, Kyungpook National University, Daegu 41944, Republic of Korea, 2CJ CheilJedang Research Institute of Biotechnology, Suwon 16495, Republic of Korea |
| Bibliography | Journal of Microbiology, 56(12),917–925, 2018, |
| DOI | 10.1007/s12275-018-8310-1 |
| Key Words | bacteriophage, Salmonella, foodborne pathogens |
| Abstract | In this study, we sought to isolate Salmonella Enteritidis-specific lytic bacteriophages (phages), and we found a lytic phage that could lyse not only S. Enteritidis but also other Gramnegative foodborne pathogens. This lytic phage, SS3e, could lyse almost all tested Salmonella enterica serovars as well as other enteric pathogenic bacteria including Escherichia coli, Shigella sonnei, Enterobacter cloacae, and Serratia marcescens. This SS3e phage has an icosahedral head and a long tail, indicating belong to the Siphoviridae. The genome was 40,793 base pairs, containing 58 theoretically determined open reading frames (ORFs). Among the 58 ORFs, ORF49, and ORF25 showed high sequence similarity with tail spike protein and lysozyme-like protein of Salmonella phage SE2, respectively, which are critical proteins recognizing and lysing host bacteria. Unlike SE2 phage whose host restricted to Salmonella enterica serovars Enteritidis and Gallinarum, SS3e showed broader host specificity against Gram-negative enteric bacteria; thus, it could be a promising candidate for the phage utilization against various Gram-negative bacterial infection including foodborne pathogens. |