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  • Title: Properties of the tungsten-substituted molybdenum formylmethanofuran dehydrogenase from Methanobacterium wolfei.
    Author: Schmitz RA, Albracht SP, Thauer RK.
    Journal: FEBS Lett; 1992 Aug 31; 309(1):78-81. PubMed ID: 1324851.
    Abstract:
    In Methanobacterium wolfei two formylmethanofuran dehydrogenases are present, one of which is a molybdenum- and the other a tungsten enzyme. We report here that also the 'molybdenum' enzyme contained tungsten when the archaeon was grown on molybdenum-deprived medium supplemented with tungstate (1 microM). Unexpectedly the tungsten-substituted molybdenum enzyme was catalytically active and displayed a rhombic EPR signal which was attributed to tungsten by the characteristic 183W splitting.
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