Korean Journal of Microbiology (미생물학회지)

The Microbiological Society of Korea (한국미생물학회)
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Investigation of biodegradation pathway of dibenzofuran by Novosphingobium pentaromativorans US6-1 via transcriptomic and mass-spectrometric analysis

전사체와 대사물질 구조분석을 통한 Novosphingobium pentaromativorans US6-1의 dibenzofuran 분해 경로 해석

  • 나혜윤 (해양생명공학연구센터 한국해양과학기술원) ;
  • 권개경 (해양생명공학연구센터 한국해양과학기술원)
  • Received : 2017.11.09
  • Accepted : 2018.01.23
  • Published : 2018.03.31
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Abstract

Biodegradation pathway of dibenzofuran (DBF) of Novosphingobium pentaromativorans US6-1, a high-molecular-weight polycyclic aromatic hydrocarbons degrading strain, was investigated via analysis of metabolic intermediates and transcriptome. As a result, 3(2H)-benzofuranone, a basic skeleton of the metabolic intermediates produced by lateral dioxygenation process, was detected as an intermediate. RNA-Seq analysis confirmed that most of the expressed genes upon exposure to DBF were related to the lateral degradation pathway. Based on these results, the biodegradation pathway of DBF by N. pentaromativorans US6-1 was proposed.

다환 방향족 탄화수소(polycyclic aromatic hydrocarbon, PAH) 우수 분해균주인 Novosphingobium pentaromativorans US6-1의 dibenzofuran (DBF) 분해경로를 밝히기 위하여 중간대사물질 분석과 전사체 분석을 진행하였다. GC/MS로 중간대사물질을 분석한 결과, 3(2H)-벤조퓨라논이 검출되었는데 이 화합물은 측면 이산소화에 의해 생성된 중간대사산물들의 기본 골격이 되는 물질로써 균주 US6-1에 의한 DBF의 분해가 측면 이산소화로 진행될 가능성을 시사한다. RNA-Seq 분석 결과, 균주 US6-1이 DBF에 노출되었을 때 발현되는 유전자들의 대부분이 lateral dioxygenation과 관련이 있다는 것을 확인하였다. 이상의 결과로부터N. pentaromativorans US6-1에 의해 일어나는 측면 이산소화를통한 DBF 분해경로와 관련 유전자들을 제시하였다.

Keywords

References

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