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Comparative genomic analysis and characteristics of NCCP15740, the major type of enterotoxigenic Escherichia coli in Korea

Overview of attention for article published in Gut Pathogens, September 2017
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Title
Comparative genomic analysis and characteristics of NCCP15740, the major type of enterotoxigenic Escherichia coli in Korea
Published in
Gut Pathogens, September 2017
DOI 10.1186/s13099-017-0204-y
Pubmed ID
Authors

Taesoo Kwon, Si-yun Chung, Young-Hee Jung, Su-Jin Jung, Sang-Gyun Roh, Je-Seop Park, Cheorl-Ho Kim, Won Kim, Young-Seok Bak, Seung-Hak Cho

Abstract

Enterotoxigenic Escherichia coli (ETEC) cause infectious diarrhea and diarrheal death. However, the genetic properties of pathogenic strains vary spatially and temporally, making prevention and treatment difficult. In this study, the genomic features of the major type of ETEC in Korea from 2003 to 2011 were examined by whole-genome sequencing of strain NCCP15740, and a comparative genomic analysis was performed with O6 reference strains. The assembled genome size of NCCP15740 was 4,795,873 bp with 50.54% G+C content. Using rapid annotation using subsystem technology analysis, we predicted 4492 ORFs and 17 RNA genes. NCCP15740 was investigated for enterotoxin genes, colonization factor (CF) genes, serotype, multilocus sequence typing (MLST) profiles, and classical and nonclassical virulence factors. NCCP15740 belonged to the O6:H16 serotype and possessed enterotoxin genes encoding heat-stable toxin (STh) and heat-labile toxin (LT); 87.5% of the O6 serotype strains possessed both toxin types. NCCP15740 carried the colonization factors CS2 and CS3, whereas most O6 strains carried CS2-CS3-CS21 (79.2%). NCCP15740 harbored fewer virulence factors (59.4%) than the average observed in other O6 strains (62.0%). Interestingly, NCCP15740 did not harbor any nonclassical virulence genes. The major type of ETEC in Korea had the same MLST sequence type as that of isolates from the USA obtained in 2011 and 2014, but had different colonization factor types and virulence profiles. These results provide important information for the development of an ETEC vaccine candidate.

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Mendeley readers

Mendeley readers

The data shown below were compiled from readership statistics for 23 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
Unknown 23 100%

Demographic breakdown

Readers by professional status Count As %
Researcher 5 22%
Student > Ph. D. Student 4 17%
Student > Bachelor 4 17%
Student > Doctoral Student 2 9%
Student > Master 1 4%
Other 1 4%
Unknown 6 26%
Readers by discipline Count As %
Biochemistry, Genetics and Molecular Biology 5 22%
Agricultural and Biological Sciences 5 22%
Engineering 2 9%
Veterinary Science and Veterinary Medicine 1 4%
Nursing and Health Professions 1 4%
Other 3 13%
Unknown 6 26%
Attention Score in Context

Attention Score in Context

This research output has an Altmetric Attention Score of 1. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 26 September 2017.
All research outputs
#20,448,386
of 23,003,906 outputs
Outputs from Gut Pathogens
#484
of 525 outputs
Outputs of similar age
#278,123
of 318,397 outputs
Outputs of similar age from Gut Pathogens
#14
of 15 outputs
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