Characterization of a Cryptic Plasmid, pSM103mini, from Polyethylene-Glycol Degrading Sphingopyxis macrogoltabida Strain 103

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概要

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• A cryptic plasmid, pSM103mini, was found in polyethylene-glycol degrading bacterium Sphingopyxis macrogoltabida, strain 103. The plasmid was 4,328-bp long and its GC content was 57.5%. It contained four open reading frames, but only two of them showed significant similarity to reported proteins. ORF3 and ORF4 were assumed to encode resolvase and replication protein (RepA) respectively. Downstream of ORF4 we found complex repeat sequences. These together with ORF3 and 4 were necessary and sufficient for plasmid maintenance in strain 103, as analyzed by constructing deletion plasmids. The pHSG398-fused plasmid (pHSG-SM103mini) functioned as a shuttle vector between strain 103 and Escherichia coli. The plasmid constructed was maintained in strain 103 and its close relative, S. macrogoltabida strain 203, but not efficiently in PEG-degrading S. terrae.

• 2011-02-23

著者

• Kimbara Kazuhide

  Research Institute For Bioresources Okayama University

• Kimbara Kazuhide

  Res. Inst. Biores. Okayama Univ.

• Tani Akio

  Research Institute For Bioresouces Okayama University

• Kawai Fusako

  Research Institute For Bioresources Okayama University:(present Office)r & D Center For Bio-base

• TANI Akio

  Institute of Plant Science and Resources, Okayama University

• TANAKA Akiyuki

  Institute of Plant Science and Resources, Okayama University

• Kawai Fusako

  Res. Inst. Biores. Okayama Univ.

• Tani Akio

  Institute Of Plant Science And Resources Okayama University

• Kawai Fusako

  Institute Of Plant Science And Resources Okayama University

• Minami Toshiyuki

  Institute Of Plant Science And Resources Okayama University

• Kimbara Kazuhide

  Institute Of Plant Science And Resources Okayama University

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