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  • 1
    Digitale Medien
    Digitale Medien
    A combined pathway of sulfur compound disproportionation in Desulfovibrio desulfuricans (1998)
    Oxford, UK : Blackwell Publishing Ltd
    FEMS microbiology letters 166 (1998), S. 0 
    Details
    ISSN: 1574-6968
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Biologie
    Notizen: The fates of the two different sulfur atoms of the thiosulfate molecule during anaerobic disproportionation by the sulfate-reducing bacterium Desulfovibrio desulfuricans were followed by isotope mass spectrometry. During disproportionation, 32S-thiosulfate was preferentially metabolized, and the residual thiosulfate became enriched in 34S. The sulfate formed was isotopically heavier than the inner sulfur of the consumed thiosulfate. Vice versa, the sulfide formed was isotopically lighter than the outer sulfur of the consumed thiosulfate. These results indicate that thiosulfate is cleaved to intermediates that undergo further disproportionation to sulfate and sulfide in a second step. These intermediates are probably elemental sulfur and sulfite. It is concluded that disproportionation of thiosulfate, sulfite and elemental sulfur includes a combined pathway.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1574-6968.1998.tb13888.x
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 2
    Digitale Medien
    Digitale Medien
    Fractionation of sulfur isotopes during thiosulfate reduction by Desulfovibrio desulfuricans (1998)
    Springer
    Archives of microbiology 169 (1998), S. 460-463 
    Details
    ISSN: 1432-072X
    Schlagwort(e): Key words Sulfate-reducing bacteria ; Thiosulfate ; reduction ; Sulfate reduction ; Stable isotopes ; Sulfur isotope fractionation ; Mass spectrometry
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract Sulfur isotope fractionation during reduction of thiosulfate was investigated with growing batch cultures of Desulfovibrio desulfuricans CSN (DSM 9104) at 30 °C. The sulfide produced was depleted in 34S by 10‰ as compared to total thiosulfate sulfur. The depletion was equal to that during sulfate reduction under similar conditions. The two sulfur atoms of the thiosulfate molecule were affected differently by fractionation. Sulfide produced from sulfonate sulfur was depleted by 15.4‰, sulfide produced from sulfane sulfur by 5.0‰.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/s002030050597
    Standort Signatur Einschränkungen Verfügbarkeit
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