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Isolation and characterization of a crude oil degrading bacteria from formation water: comparative genomic analysis of environmental Ochrobactrum intermedium isolate versus clinical strains
Authors:Lu-jun CHAI  Xia-wei JIANG  Fan ZHANG  Bei-wen ZHENG  Fu-chang SHU  Zheng-liang WANG  Qing-feng CUI  Han-ping DONG  Zhong-zhi ZHANG  Du-jie HOU  Yue-hui SHE
Abstract:In this study, we isolated an environmental clone of Ochrobactrum intermedium, strain 2745-2, from the formation water of Changqing oilfield in Shanxi, China, which can degrade crude oil. Strain 2745-2 is aerobic and rod-shaped with optimum growth at 42 °C and pH 5.5. We sequenced the genome and found a single chromosome of 4 800 175 bp, with a G+C content of 57.63%. Sixty RNAs and 4737 protein-coding genes were identified: many of the genes are responsible for the degradation, emulsification, and metabolizing of crude oil. A comparative genomic analysis with related clinical strains (M86, 229E, and LMG3301T) showed that genes involved in virulence, disease, defense, phages, prophages, transposable elements, plasmids, and antibiotic resistance are also present in strain 2745-2.
Keywords:Comparative genome  Ochrobactrum intermedium  Oil degradation  Pathogen
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