본문 바로가기
HOME> 논문 > 논문 검색상세

논문 상세정보

Journal of bacteriology v.199 no.5, 2017년, pp.e00670-16 - e00670-16   SCI SCIE
본 등재정보는 저널의 등재정보를 참고하여 보여주는 베타서비스로 정확한 논문의 등재여부는 등재기관에 확인하시기 바랍니다.

The Master Regulators of the Fla1 and Fla2 Flagella of Rhodobacter sphaeroides Control the Expression of Their Cognate CheY Proteins

Hernandez-Valle, José (Instituto de Investigaciones Bioméédicas, Universidad Nacional Autééónoma de Mééóéxico, Mexico City, Mexico ) ; Domenzain, Clelia (Instituto de Investigaciones Bioméédicas, Universidad Nacional Autééónoma de Mééóéxico, Mexico City, Mexico ) ; de la Mora, Javier (Instituto de Fisiologééóéía Celular, Universidad Nacional Autééóéíónoma de Mééóéíóéxico, Mexico City, Mexico ) ; Poggio, Sebastian (Instituto de Investigaciones Bioméédicas, Universidad Nacional Autééónoma de Mééóéxico, Mexico City, Mexico ) ; Dreyfus, Georges (Instituto de Fisiologééóéía Celular, Universidad Nacional Autééóéíónoma de Mééóéíóéxico, Mexico City, Mexico ) ; Camarena, Laura (Institu ) ;
  • 초록  

    Rhodobacter sphaeroides is an alphaproteobacterium that has two complete sets of flagellar genes. The fla1 set was acquired by horizontal transfer from an ancestral gammaproteobacterium and is the only set of flagellar genes that is expressed during growth under standard laboratory conditions. The products of these genes assemble a single, subpolar flagellum. In the absence of the Fla1 flagellum, a gain-of-function mutation in the histidine kinase CckA turns on the expression of the fla2 flagellar genes through the response regulator CtrA. The rotation of the Fla1 and Fla2 flagella is controlled by different sets of chemotaxis proteins. Here, we show that the expression of the chemotaxis proteins that control Fla2, along with the expression of the fla2 genes, is coordinated by CtrA, whereas the expression of the chemotaxis genes that control Fla1 is mediated by the master regulators of the Fla1 system. The coordinated expression of the chemosensory proteins with their cognate flagellar genes highlights the relevance of integrating the expression of the horizontally acquired fla1 genes with a chemosensory system independently of the regulatory proteins responsible for the expression of fla2 and its cognate chemosensory system. IMPORTANCE Gene acquisition via horizontal transfer represents a challenge to the recipient organism to adjust its metabolic and genetic networks to incorporate the new material in a way that represents an adaptive advantage. In the case of Rhodobacter sphaeroides , a complete set of flagellar genes was acquired and successfully coordinated with the native flagellar system. Here we show that the expression of the chemosensory proteins that control flagellar rotation is dependent on the master regulators of their corresponding flagellar system, minimizing the use of transcription factors required to express the native and horizontally acquired genes along with their chemotaxis proteins.


  • 주제어

    Rhodobacter sphaeroides .   chemotaxis .   bacterial flagellum .   horizontal transfer .   FleQ .   CtrA .   RpoN .   sigma-54.  

 활용도 분석

  • 상세보기

    amChart 영역
  • 원문보기

    amChart 영역

원문보기

무료다운로드
유료다운로드
  • 원문이 없습니다.

유료 다운로드의 경우 해당 사이트의 정책에 따라 신규 회원가입, 로그인, 유료 구매 등이 필요할 수 있습니다. 해당 사이트에서 발생하는 귀하의 모든 정보활동은 NDSL의 서비스 정책과 무관합니다.

원문복사신청을 하시면, 일부 해외 인쇄학술지의 경우 외국학술지지원센터(FRIC)에서
무료 원문복사 서비스를 제공합니다.

NDSL에서는 해당 원문을 복사서비스하고 있습니다. 위의 원문복사신청 또는 장바구니 담기를 통하여 원문복사서비스 이용이 가능합니다.

이 논문과 함께 출판된 논문 + 더보기