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  Molecular analysis of the distribution and phylogeny of the soxB gene among sulfur-oxidizing bacteria - evolution of the Sox sulfur oxidation enzyme system

Meyer, B., Imhoff, J. F., & Kuever, J. (2007). Molecular analysis of the distribution and phylogeny of the soxB gene among sulfur-oxidizing bacteria - evolution of the Sox sulfur oxidation enzyme system. Environmental Microbiology, 9(12), 2957-2977.

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Meyer, B.1, Author              
Imhoff, J. F.1, Author              
Kuever, J.1, Author              
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1Department of Microbiology, Max Planck Institute for Marine Microbiology, Max Planck Society, ou_2481695              

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 Abstract: The soxB gene encodes the SoxB component of the periplasmic thiosulfate-oxidizing Sox enzyme complex, which has been proposed to be widespread among the various phylogenetic groups of sulfur-oxidizing bacteria (SOB) that convert thiosulfate to sulfate with and without the formation of sulfur globules as intermediate. Indeed, the comprehensive genetic and genomic analyses presented in the present study identified the soxB gene in 121 phylogenetically and physiologically divergent SOB, including several species for which thiosulfate utilization has not been reported yet. In first support of the previously postulated general involvement of components of the Sox enzyme complex in the thiosulfate oxidation process of sulfur-storing SOB, the soxB gene was detected in all investigated photo- and chemotrophic species that form sulfur globules during thiosulfate oxidation (Chromatiaceae, Chlorobiaceae, Ectothiorhodospiraceae, Thiothrix, Beggiatoa, Thiobacillus, invertebrate symbionts and free-living relatives). The SoxB phylogeny reflected the major 16S rRNA gene-based phylogenetic lineages of the investigated SOB, although topological discrepancies indicated several events of lateral soxB gene transfer among the SOB, e.g. its independent acquisition by the anaerobic anoxygenic phototrophic lineages from different chemotrophic donor lineages. A putative scenario for the proteobacterial origin and evolution of the Sox enzyme system in SOB is presented considering the phylogenetic, genomic (sox gene cluster composition) and geochemical data.

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Language(s): eng - English
 Dates: 2007-08-062007-12
 Publication Status: Published in print
 Pages: 21
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 Table of Contents: -
 Rev. Type: Peer
 Identifiers: eDoc: 341635
ISI: 000250761300006
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Title: Environmental Microbiology
  Other : Environmental Microbiology and Environmental Microbiology Reports
Source Genre: Journal
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Publ. Info: Oxford, England : Blackwell Science
Pages: - Volume / Issue: 9 (12) Sequence Number: - Start / End Page: 2957 - 2977 Identifier: ISSN: 1462-2912
CoNE: https://pure.mpg.de/cone/journals/resource/959328105031