Journal of Microbiology and Biotechnology
The Korean Society for Microbiology and Biotechnology publishes the Journal of Microbiology and Biotechnology.
Journal of Microbiology and Biotechnology
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2019 ; 29(1):

AuthorSang-Hyeok Cho, Eunju Lee, So-Ra Ko, Sangrak Jin, Yoseb Song, Chi-Yong Ahn, Hee-Mock Oh, Byung-Kwan Cho, Suhyung Cho
AffiliationDepartment of Biological Sciences, Korea advanced institute of Science and Technology, Daejeon, Republic of Korea
TitleElucidation of the biosynthetic pathway of vitamin B groups and potential secondary metabolite gene clusters via genome analysis of a marine bacterium Pseudoruegeria sp. M32A2M
PublicationInfo J. Microbiol. Biotechnol.2019 ; 29(1):
AbstractThe symbiotic nature of the relationship between algae and marine bacteria is well-studied among the complex microbial interactions. The mutual profit between algae and bacteria occurs via nutrient and vitamin exchange. It is necessary to analyze the genome sequence of a bacterium to predict its symbiotic relationships. In this study, the genome of a marine bacterium, Pseudoruegeria sp. M32A2M, isolated from the south-eastern isles (GeoJe-Do) of South Korea, was sequenced and analyzed. A draft genome (91 scaffolds) of 5.5 Mb with a DNA G+C content of 62.4% was obtained. In total, 5,101 features were identified from gene annotation, and 4,927 genes were assigned to functional proteins. We also identified transcription core proteins, RNA polymerase subunits, and sigma factors. In addition, full flagella-related gene clusters involving the flagellar body, motor, regulator, and other accessory compartments were detected even though the genus Pseudoruegeria is known to comprise non-motile bacteria. Examination of annotated KEGG pathways revealed that Pseudoruegeria sp. M32A2M has the metabolic pathways for all seven vitamin Bs, including thiamin (vitamin B1), biotin (vitamin B7), and cobalamin (vitamin B12), which are necessary for symbiosis with vitamin B auxotroph algae. We also identified gene clusters for seven secondary metabolites including ectoine, homoserine lactone, beta-lactone, terpene, lasso peptide, bacteriocin, and non-ribosomal proteins.
KeywordsPseudoruegeria, whole-genome sequencing, Vitamin B, secondary metabolite
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