미생물학회지 (Korean Journal of Microbiology)

  • 제40권2호
  • /
  • Pages.172-177
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  • 2004
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  • 0440-2413(pISSN)
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  • 2383-9902(eISSN)
한국미생물학회 (The Microbiological Society of Korea)
권호 표지

Rhodospirillum rubrum Plasmid pKY1의 유전정보 분석과 그의 활용에 관한 연구

Genetic Analysis and its Application of Rhodosprillum rubrum PKY1 Plasmid

  • 김복환 (한국방송통신대학교 환경보건학과) ;
  • 김정목 (한양대학교 화학과)
  • 발행 : 2004.06.01
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초록

광합성 박테리아 Rhodospirillum rubrum은 광원의 조건에 따라 균주 내의 신진대사 양상이 변화된다고 보고 되어 왔다. 이러한 광조건에 의한 신진대사 변환 과정을 담당하는 유전자에 대한 연구는 광합성 박테리아에 관한 주된 과제 중 하나이다. 근래 이러한 광조건에 의한 균주내 변화 과정이 균주가 지니는 extrachromosomal plasmid와 관련이 있음이 보고되었다. 본 연구는 광합성 박테리아 R. rubrum의 extrachromosomal plamid pKYl 을 분리 정제하고 이를 제한효소 HindIII로 단편화 하여 이들 단편의 일부에 대한 염기서열을 분석하고 이들의 기능을 추론하였다. 본 연구를 통하여 plasmid pKY1에 박테리아의 유전적 재조합 (genetic recombination)에 관여하는 단백질에 대한 정보가 위치하고 있음을 유전자 및 아미노산 상동성 조사를 통하여 알 수 있었다.

Photosynthetic bacteria, Rhodospirillum rubrum, have been reported to change their metabolic patterns depend-ing on the light condition. The genetic approach for such a metabolic change is one of main subject in pho-tosynthetic bacteria. It has been reported that the extrachromosomal plasmid might be related to this metabolic regulation. In this study, we have determined the partial sequences of R. rubrum plasmid pKYl with HindIII fragments and the predicted pKYl ORFs and physical map. We found the 8 putative proteins related to the genetic recombination of bacterium, which is reported to the alternative gene expression. Our results suggest that the genes located in pKYl are possibly involved in the metabolic switch according to the photocondition.

키워드

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