CTX Prophages in Vibrio cholerae O1 Strains
- Authors
- Kim, Eun Jin; Lee, Dokyung; Moon, Se Hoon; Lee, Chan Hee; Kim, Dong Wook
- Issue Date
- Jun-2014
- Publisher
- KOREAN SOC MICROBIOLOGY & BIOTECHNOLOGY
- Keywords
- V. cholerae; atypical El Tor; cholera; cholera toxin
- Citation
- JOURNAL OF MICROBIOLOGY AND BIOTECHNOLOGY, v.24, no.6, pp.725 - 731
- Indexed
- SCIE
SCOPUS
KCI
- Journal Title
- JOURNAL OF MICROBIOLOGY AND BIOTECHNOLOGY
- Volume
- 24
- Number
- 6
- Start Page
- 725
- End Page
- 731
- URI
- https://scholarworks.bwise.kr/erica/handle/2021.sw.erica/22831
- DOI
- 10.4014/jmb.1403.03063
- ISSN
- 1017-7825
- Abstract
- The classical biotype strains of the Vibrio cholerae O1 serogroup harbor the biotype-specific cholera-toxin encoding phage (CTX) CTXcla, and the El Tor biotype strains contain CTX-1. Although the classical biotype strains have become extinct, a remnant of classical CTX phage is transferred to the El Tor biotype strains. The prototype El Tor strains, which produce the biotype-specific cholera toxin, are now being replaced by atypical El Tor variant strains producing classical biotype cholera toxin. The genome sequences of the CTX phages in atypical El Tor strains indicate that the CTX phages in atypical El Tor strains are a mosaic of CTXcla and CTX-1. Before the emergence of atypical El Tor stains in the early 1990s, unusual pre-seventh pandemic strains were isolated in the US Gulf Coast between 1973 and 1986. These strains have characteristics of atypical El Tor strains since they are El Tor biotype strains containing CTXcla, yet the genome sequence of this CTX phage indicates that it is different from CTXcla and is therefore classified separately as CTXUS Gulf.
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