Abstract
The degradation of taurine, isethionate and sulfoacetate in Cupriavidus necator (Ralstonia eutropha) H16 was shown by enzyme assays to be inducible, and each pathway involved sulfoacetaldehyde, which was subject to phosphatolysis by a common sulfoacetaldehyde acetyltransferase (Xsc, H16_B1870) to yield acetyl phosphate and sulfite. The neighbouring genes encoded phosphate acetyltransferase (Pta, H16_B1871) and a hypothetical protein [domain of unknown function (DUF)81, H16_B1872], with eight derived transmembrane helices. RT-PCR showed inducible transcription of these three genes, and led to the hypothesis that H16_B1872 and orthologous proteins represent a sulfite exporter, which was named TauE.
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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Acetaldehyde / analogs & derivatives
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Acetaldehyde / chemistry
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Acetaldehyde / metabolism
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Alkanesulfonates / chemistry
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Alkanesulfonates / metabolism*
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Bacterial Proteins / genetics
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Bacterial Proteins / metabolism*
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Cupriavidus necator / enzymology
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Cupriavidus necator / genetics
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Cupriavidus necator / growth & development*
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Cupriavidus necator / metabolism
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Gene Expression Regulation, Bacterial*
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Isethionic Acid / chemistry
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Isethionic Acid / metabolism
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Phylogeny
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Sequence Analysis, DNA
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Sulfites / metabolism*
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Taurine / chemistry
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Taurine / metabolism*
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Transcription, Genetic
Substances
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Alkanesulfonates
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Bacterial Proteins
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Sulfites
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Taurine
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sulfoacetaldehyde
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Isethionic Acid
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Acetaldehyde