• 제목/요약/키워드: pWWO

검색결과 2건 처리시간 0.016초

Cloning and Overexpression of Methylcatechol 2, 3-Dioxygenase Gene from Toluene-Degrading Pseudomonas putida mt-2(pWWO)

  • Lee, Jeong-Rai;Min, Kyung-Rak;Kim, Young-Soo
    • Archives of Pharmacal Research
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    • 제15권4호
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    • pp.360-364
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    • 1992
  • Methylcatechol 2, 3-dioxygenase encoded in pWWO megaplasmid of Pseudomonas putida mt-2 has been cloned and overexpressed in Escherichia coli. This enzyme gene has been localized inside 2. 3-kb XhoI fragment derived from the pWWO megaplasmid. Analysis of enzyme activity and SDS-PAGE showed that the cloned methylcatechol 2, 3-dioxygenase gene in E. coli was about 100 fold overexpressed compared with the parental gene in P. putida mt-2 (pWWO). The cloned enzyme exhibited higher ring-fission activity to catechol than catechol derivatives including 3-methylcatechol, 4-methylcatechol, and 4-chlorocatechol.

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CAM 플라스미드를 함유하는 Pseudomonas putida PpG1에서 TOL 플라스미드이 DNA 재배열 (DNA Rearrangement of TOL Plasmid in Pseudomonas putida PpGl Harbouring CAM Plasmid)

  • 전효곤;조경연;고영희
    • 한국미생물·생명공학회지
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    • 제18권4호
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    • pp.433-436
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    • 1990
  • 접합에 의한 P.putida mt-2의 TOL를 CAM 함유 P.putida PpG1으로 이동시켜 형성된 접합주 P.Putida CST3A는 작아진 TOL(TOL$\Delta$)를 가지고 있었지만, m-toiuate를 분해할 수 있었다. 접합에 의한 이동실험은 CAM에 결합되어 CAM:TO* 플라스미드를 형성하고 있었다. 불화합성 Inc P9군에 속하는 NAH를 CAM:TOL* 과 TOL$\Delta$을 가지는 P.putida CST3A로 이동시키면 TOL$\Delta$의 방출이 관찰되었으나 m-toluate 대사에는 아무런 영향을 미치지 않았다.

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