The role of thiosulfate in sulfur metabolism ofRhodopseudomonas globiformis

✍ Scribed by Johann Then; Hans G. Trüper

• Publisher: Springer
• Year: 1981
• Tongue: English
• Weight: 356 KB
• Volume: 130
• Category: Article
• ISSN: 0302-8933
• DOI: 10.1007/bf00411067

✦ Synopsis

Rhodopseudomonas globiformis is able to assimilate both sulfur moieties of thiosulfate. During growth on 35Slabelled thiosulfate the amino acids cysteine, homocysteine and methionine were labelled. The bulk of thiosulfaLe, however, was oxidized to tetrathionate and accumulated in the medium. A thiosulfate: acceptor oxidoreductase was partially purified and characterized. The enzyme oxidized thiosulfate to tetrathionate in the presence of ferricyanide. A c-type cytochrome isolated from this organism was reduced by this enzyme.