2007
DOI: 10.1007/s10482-007-9212-0
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Abstract: Sulphate-reducing bacteria are important players in the global sulphur and carbon cycles, with considerable economical and ecological impact. However, the process of sulphate respiration is still incompletely understood. Several mechanisms of energy conservation have been proposed, but it is unclear how the different strategies contribute to the overall process. In order to obtain a deeper insight into the energy metabolism of sulphate-reducers whole-genome microarrays were used to compare

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Cited by 67 publications
(85 citation statements)
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“…The g value (2.003) and strong hyperfine coupling to a single proton (1.3 mT) indicate the presence of an organic radical located at the α-carbon of an amino acid and are consistent with previously reported EPR spectra of cells expressing glycyl radical enzymes (30,31). The weaker nonhyperfine isotropic signal observed for cells from pyruvate cultures likely originates from flavoproteins, which are produced by a related Desulfovibrio strain during growth on pyruvate (32). Overall, these EPR experiments link choline utilization to a glycine-centered radical and indicate that choline TMA-lyase CutC is a member of the glycyl radical enzyme family.…”
Section: Resultssupporting
confidence: 88%
“…The g value (2.003) and strong hyperfine coupling to a single proton (1.3 mT) indicate the presence of an organic radical located at the α-carbon of an amino acid and are consistent with previously reported EPR spectra of cells expressing glycyl radical enzymes (30,31). The weaker nonhyperfine isotropic signal observed for cells from pyruvate cultures likely originates from flavoproteins, which are produced by a related Desulfovibrio strain during growth on pyruvate (32). Overall, these EPR experiments link choline utilization to a glycine-centered radical and indicate that choline TMA-lyase CutC is a member of the glycyl radical enzyme family.…”
Section: Resultssupporting
confidence: 88%
“…In addition, a formate dehydrogenase gene cluster (DVU0586-0588) had increased expression under nitrate stress (data not shown). The composite of these differentially expressed genes appears to be consistent with an increased flow of reducing equivalent cycling through formate as a metabolic intermediate, as suggested under certain growth conditions Pereira et al, 2008).…”
Section: Genes Involved In Energy Metabolismsupporting
confidence: 70%
“…Thus, although the core metabolic machinery for sulphate reduction is conserved in all studied SRMs, there is a substantial variation in the mechanisms of redox cycling and electron flow, and novel mechanisms of energy conservation may remain to be discovered. Indeed, the plethora of redox proteins that are involved in energy metabolism in D. vulgaris H. exhibit complex gene expression patterns that are specific to distinct stress conditions, demonstrating the importance of adjustments in energy metabolism pathways as a central strategy in the stress response [37][38][39][40][41] . Even less is known about sulphate reduction and electron transport in sulphate-reducing Nitrospira spp.…”
mentioning
confidence: 99%