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Gut Pathog. 2016 Nov 25;8:62. doi: 10.1186/s13099-016-0145-x. eCollection 2016.

Genome sequence of a commensal bacterium, Enterococcus faecalis CBA7120, isolated from a Korean fecal sample.

Author information

1
Biological Disaster Analysis Group, Korea Basic Science Institute, Daejeon, 34133 South Korea.
2
Department of Food Science and Engineering, Ewha Womans University, Seoul, 03760 South Korea.
3
ChunLab Inc., Seoul National University, Seoul, 151-742 South Korea.
4
Korea Zoonosis Research Institute, Chonbuk National University, Jeonju, 561-756 South Korea.
5
Research Group of Gut Microbiome, Korea Food Research Institute, Seongnam, 13539 South Korea.
6
University of Science and Technology, Daejeon, 34113 South Korea.
#
Contributed equally

Abstract

BACKGROUND:

Enterococcus faecalis, the type strain of the genus Enterococcus, is not only a commensal bacterium in the gastrointestinal tract in vertebrates and invertebrates, but also causes serious disease as an opportunistic pathogen. To date, genome sequences have been published for over four hundred E. faecalis strains; however, pathogenicity of these microbes remains complicated. To increase our knowledge of E. faecalis virulence factors, we isolated strain CBA7120 from the feces of an 81-year-old female from the Republic of Korea and performed a comparative genomic analysis.

RESULTS:

The genome sequence of E. faecalis CBA7120 is 3,134,087 bp in length, with a G + C content of 37.35 mol%, and is comprised of four contigs with an N50 value of 2,922,046 bp. The genome showed high similarity with other strains of E. faecalis, including OG1RF, T13, 12107 and T20, based on OrthoANI values. Strain CBA7120 contains 374 pan-genome orthologous groups (POGs) as singletons, including "Phages, Prophages, Transposable elements, Plasmids," "Carbohydrates," "DNA metabolism," and "Virulence, Disease and Defense" subsystems. Genes related to multidrug resistance efflux pumps were annotated in the genome.

CONCLUSIONS:

The comparative genomic analysis of E. faecalis strains presented in this study was performed using a variety of analysis methods and will facilitate future identification of hypothetical proteins.

KEYWORDS:

Comparative genomics; Enterococcus faecalis; Genome sequence; Virulence factors

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