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Nitrogen Fixation and Molecular Oxygen: Comparative Genomic Reconstruction of Transcription Regulation in Alphaproteobacteria

Tsoy, Olga V ; Ravcheev, Dmitry A ; Čuklina, Jelena ; Gelfand, Mikhail S

Frontiers in microbiology, 2016-08, Vol.7, p.1343-1343 [Periódico revisado por pares]

Switzerland: Frontiers Media S.A

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  • Título:
    Nitrogen Fixation and Molecular Oxygen: Comparative Genomic Reconstruction of Transcription Regulation in Alphaproteobacteria
  • Autor: Tsoy, Olga V ; Ravcheev, Dmitry A ; Čuklina, Jelena ; Gelfand, Mikhail S
  • Assuntos: Bacteria ; Comparative genomics ; Microbiology ; Nitrogen Fixation ; Regulon ; Transcription Factors
  • É parte de: Frontiers in microbiology, 2016-08, Vol.7, p.1343-1343
  • Notas: ObjectType-Article-1
    SourceType-Scholarly Journals-1
    ObjectType-Feature-2
    content type line 23
    Reviewed by: James Hemp, California Institute of Technology, USA; Eric Boyd, Montana State University, USA
    These authors have contributed equally to this work.
    Edited by: Martin G. Klotz, Queens College, City University of New York, USA
    This article was submitted to Evolutionary and Genomic Microbiology, a section of the journal Frontiers in Microbiology
  • Descrição: Biological nitrogen fixation plays a crucial role in the nitrogen cycle. An ability to fix atmospheric nitrogen, reducing it to ammonium, was described for multiple species of Bacteria and Archaea. The transcriptional regulatory network for nitrogen fixation was extensively studied in several representatives of the class Alphaproteobacteria. This regulatory network includes the activator of nitrogen fixation NifA, working in tandem with the alternative sigma-factor RpoN as well as oxygen-responsive regulatory systems, one-component regulators FnrN/FixK and two-component system FixLJ. Here we used a comparative genomics approach for in silico study of the transcriptional regulatory network in 50 genomes of Alphaproteobacteria. We extended the known regulons and proposed the scenario for the evolution of the nitrogen fixation transcriptional network. The reconstructed network substantially expands the existing knowledge of transcriptional regulation in nitrogen-fixing microorganisms and can be used for genetic experiments, metabolic reconstruction, and evolutionary analysis.
  • Editor: Switzerland: Frontiers Media S.A
  • Idioma: Inglês
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