Microbiology and Biotechnology Letters (한국미생물·생명공학회지)

The Korean Society for Microbiology and Biotechnology (한국미생물·생명공학회)
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Isolation of Chondromyces crocatus in Pure Culture

Chondromyces crocatus의 순수 분리

  • Lee, Cha-Yul (Myxobacteria Bank, Department of Biotechnology, Hoseo University) ;
  • Hyun, Hye-Sook (Myxobacteria Bank, Department of Biotechnology, Hoseo University) ;
  • Kim, Do-Hee (Myxobacteria Bank, Department of Biotechnology, Hoseo University) ;
  • Cho, Kung-Yun (Myxobacteria Bank, Department of Biotechnology, Hoseo University)
  • 이차율 (호서대학교 생명공학과 점액세균은행) ;
  • 현혜숙 (호서대학교 생명공학과 점액세균은행) ;
  • 김도희 (호서대학교 생명공학과 점액세균은행) ;
  • 조경연 (호서대학교 생명공학과 점액세균은행)
  • Published : 2009.12.28
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Abstract

We have isolated Chondromyces crocatus KYC2823 in pure culture and five other strains in mixed culture with companion bacteria from Korean soil samples. The strain KYC2823, which was isolated from the soil sample collected in Cheongdo-gun, Gyeongsangbuk-do, showed typical characteristics of C. crocatus, including the shape of fruiting bodies and production of a peculiar odor. In addition, the 16S rDNA sequence was 99.8% identical to that of the strain Cm c5, the proposed neotype strain of C. crocatus. Cloning and sequence analysis of the polyketide biosynthetic genes from KYC2823 by performing PCR have revealed that this strain has biosynthetic gene clusters for ajudazols (inhibitors of electron transport systems) and chondramides (substances affecting the function of the actin cytoskeleton), and biosynthetic genes for other polyketide compounds that have not been cloned yet.

국내 토양으로부터 Chondromyces crocatus KYC2823을 순수 분리하고, 또 다른 5균주를 동반 세균이 함께 존재하는 상태로 분리하였다. 균주 KYC2823은 경북 청도군에서 채취한 토양시료에서 분리하였으며, 자실체 형태와 특이한 향의 발산을 포함한 여러 특성이 전형적인 C. crocatus임을 보였다. 이에 더해, 16S rDNA 염기서열이 C. crocatus의 새 표준균주로 제안된 Cm c5과 99.8% 유사하였다. 한편, PCR을 이용한 polyketide 생합성 유전자 조각의 클로닝 및 분석은 균주 KYC2823이 전자전달계 저해물질인 ajudazol과 actin cytoskeleton의 기능에 영향을 미치는 물질인 chondramide의 생합성 유전자, 그리고 아직까지 클로닝되지 않은 polyketide 계열 물질의 생합성 유전자를 가지고 있음을 보여주었다.

Keywords

References

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