caa a22 4500 397552343 CHVBK 20180308164753.0 cr unu---uuuuu 161202e199602 xx s 000 0 eng 10.1111/j.1574-6941.1996.tb00204.x doi (NATIONALLICENCE)oxford-10.1111/j.1574-6941.1996.tb00204.x Sulfur cycling in Catenococcus thiocyclus [Elektronische Daten] [Dimitry Yu. Sorokin, Lesley A. Robertson, J. Gijs Kuenen] Since its isolation from marine volcanic areas, Catenococcus thiocyclus has been known to be able to oxidize thiosulfate to tetrathionate, but the benefits gained from the reaction were unknown. The energy to be gained from such a reaction is so small (1 electron per mol of thiosulfate, compared with 8 electrons if the thiosulfate is oxidized to sulfate) that it seemed unlikely to be a useful metabolic reaction. However, continuous culture experiments have now revealed that C. thiocyclus is able to gain metabolically useful energy from this oxidation (biomass yields increased by approximately 20% after the addition of 7.75 mM thiosulfate to medium containing 20 mM acetate) by combining it with the chemical reduction of the tetrathionate by sulfide. The enzymes for thiosulfate oxidation appear to be constitutive. Moreover, with a suitable primary energy source (e.g. glucose), C. thiocyclus can reduce sulfur (S°) to sulfide and Fe3+ to Fe2+. A chemical reaction then generates FeS. Such reactions may have important implications for the sulfur cycle at oxic:anoxic interfaces in marine and freshwater systems. © 1996 Federation of European Microbiological Societies. All rights reserved Sulfur cycle nationallicence Catenococcus thiocyclus nationallicence Thiosulfate nationallicence Tetrathionate nationallicence Sulfide nationallicence Sorokin Dimitry Yu Institute of Microbiology, Russian Academy of Science, Prospect 60 let Octyabeya 712, 117811 Moscow, Russia aut Robertson Lesley A. Department of Microbiology, Kluyver Laboratory for Biotechnology, Delft University of Technology, Julianalaan 67, 2628 BC, Delft, The Netherlands aut Kuenen J. Gijs Institute of Microbiology, Russian Academy of Science, Prospect 60 let Octyabeya 712, 117811 Moscow, Russia aut FEMS Microbiology Ecology Blackwell Publishing Ltd 19/2(1996-02), 117-125 19:2<117 1996 19 femsec https://doi.org/10.1111/j.1574-6941.1996.tb00204.x text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1111/j.1574-6941.1996.tb00204.x text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Sorokin Dimitry Yu Institute of Microbiology, Russian Academy of Science, Prospect 60 let Octyabeya 712, 117811 Moscow, Russia aut NATIONALLICENCE 700 1- Robertson Lesley A. Department of Microbiology, Kluyver Laboratory for Biotechnology, Delft University of Technology, Julianalaan 67, 2628 BC, Delft, The Netherlands aut NATIONALLICENCE 700 1- Kuenen J. Gijs Institute of Microbiology, Russian Academy of Science, Prospect 60 let Octyabeya 712, 117811 Moscow, Russia aut NATIONALLICENCE 773 0- FEMS Microbiology Ecology Blackwell Publishing Ltd 19/2(1996-02), 117-125 19:2<117 1996 19 femsec Metadata rights reserved CC BY-NC-4.0 http://creativecommons.org/licenses/by-nc/4.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-oxford