Selenium is involved in regulation of periplasmic hydrogenase gene expression in Desulfovibrio vulgaris Hildenborough.

Journal of Bacteriology
Filipa M A ValenteInês A Cardoso Pereira

Abstract

Desulfovibrio vulgaris Hildenborough is a good model organism to study hydrogen metabolism in sulfate-reducing bacteria. Hydrogen is a key compound for these organisms, since it is one of their major energy sources in natural habitats and also an intermediate in the energy metabolism. The D. vulgaris Hildenborough genome codes for six different hydrogenases, but only three of them, the periplasmic-facing [FeFe], [FeNi]1, and [FeNiSe] hydrogenases, are usually detected. In this work, we studied the synthesis of each of these enzymes in response to different electron donors and acceptors for growth as well as in response to the availability of Ni and Se. The formation of the three hydrogenases was not very strongly affected by the electron donors or acceptors used, but the highest levels were observed after growth with hydrogen as electron donor and lowest with thiosulfate as electron acceptor. The major effect observed was with inclusion of Se in the growth medium, which led to a strong repression of the [FeFe] and [NiFe]1 hydrogenases and a strong increase in the [NiFeSe] hydrogenase that is not detected in the absence of Se. Ni also led to increased formation of the [NiFe]1 hydrogenase, except for growth with H2, where its syn...Continue Reading

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Citations

Oct 11, 2011·Applied Microbiology and Biotechnology·Elsemiek CroeseJeanine S Geelhoed
Dec 7, 2007·Antonie van Leeuwenhoek·Patrícia M PereiraRicardo O Louro
Oct 13, 2009·Antonie van Leeuwenhoek·Sean M Caffrey, Gerrit Voordouw
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Aug 16, 2008·Journal of Biological Inorganic Chemistry : JBIC : a Publication of the Society of Biological Inorganic Chemistry·Antonio L De LaceyInês A C Pereira
Jul 30, 2010·Journal of Biological Inorganic Chemistry : JBIC : a Publication of the Society of Biological Inorganic Chemistry·Cristina Gutiérrez-SánchezInês A C Pereira
Dec 11, 2007·Antonie van Leeuwenhoek·Sofia M da SilvaInês A C Pereira
Oct 22, 2015·Accounts of Chemical Research·Claire WombwellErwin Reisner
Sep 18, 2012·Biochimica Et Biophysica Acta·Fabian GreinInês A C Pereira
Jun 9, 2016·Applied Microbiology and Biotechnology·Mónica MartinsInês A C Pereira
Mar 21, 2017·Nature Chemical Biology·Marta C MarquesInês A C Pereira
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Sep 12, 2007·Chemical Reviews·Kylie A VincentFraser A Armstrong
Oct 12, 2007·Chemical Reviews·Paulette M Vignais, Bernard Billoud

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