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The MetJ regulon in gammaproteobacteria determined by comparative genomics methods.

Publication ,  Journal Article
Augustus, AM; Spicer, LD
Published in: BMC Genomics
November 14, 2011

BACKGROUND: Whole-genome sequencing of bacteria has proceeded at an exponential pace but annotation validation has lagged behind. For instance, the MetJ regulon, which controls methionine biosynthesis and transport, has been studied almost exclusively in E. coli and Salmonella, but homologs of MetJ exist in a variety of other species. These include some that are pathogenic (e.g. Yersinia) and some that are important for environmental remediation (e.g. Shewanella) but many of which have not been extensively characterized in the literature. RESULTS: We have determined the likely composition of the MetJ regulon in all species which have MetJ homologs using bioinformatics techniques. We show that the core genes known from E. coli are consistently regulated in other species, and we identify previously unknown members of the regulon. These include the cobalamin transporter, btuB; all the genes involved in the methionine salvage pathway; as well as several enzymes and transporters of unknown specificity. CONCLUSIONS: The MetJ regulon is present and functional in five orders of gammaproteobacteria: Enterobacteriales, Pasteurellales, Vibrionales, Aeromonadales and Alteromonadales. New regulatory activity for MetJ was identified in the genomic data and verified experimentally. This strategy should be applicable for the elucidation of regulatory pathways in other systems by using the extensive sequencing data currently being generated.

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Published In

BMC Genomics

DOI

EISSN

1471-2164

Publication Date

November 14, 2011

Volume

12

Start / End Page

558

Location

England

Related Subject Headings

  • Repressor Proteins
  • Regulon
  • Phylogeny
  • Genomics
  • Genome, Bacterial
  • Gammaproteobacteria
  • DNA, Bacterial
  • Computational Biology
  • Bioinformatics
  • Bacterial Proteins
 

Citation

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Augustus, A. M., & Spicer, L. D. (2011). The MetJ regulon in gammaproteobacteria determined by comparative genomics methods. BMC Genomics, 12, 558. https://doi.org/10.1186/1471-2164-12-558
Augustus, Anne M., and Leonard D. Spicer. “The MetJ regulon in gammaproteobacteria determined by comparative genomics methods.BMC Genomics 12 (November 14, 2011): 558. https://doi.org/10.1186/1471-2164-12-558.
Augustus AM, Spicer LD. The MetJ regulon in gammaproteobacteria determined by comparative genomics methods. BMC Genomics. 2011 Nov 14;12:558.
Augustus, Anne M., and Leonard D. Spicer. “The MetJ regulon in gammaproteobacteria determined by comparative genomics methods.BMC Genomics, vol. 12, Nov. 2011, p. 558. Pubmed, doi:10.1186/1471-2164-12-558.
Augustus AM, Spicer LD. The MetJ regulon in gammaproteobacteria determined by comparative genomics methods. BMC Genomics. 2011 Nov 14;12:558.
Journal cover image

Published In

BMC Genomics

DOI

EISSN

1471-2164

Publication Date

November 14, 2011

Volume

12

Start / End Page

558

Location

England

Related Subject Headings

  • Repressor Proteins
  • Regulon
  • Phylogeny
  • Genomics
  • Genome, Bacterial
  • Gammaproteobacteria
  • DNA, Bacterial
  • Computational Biology
  • Bioinformatics
  • Bacterial Proteins