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    • CO2 fixation by [WIVO(S2C2(CN)2)2]2−: functional model for the tungsten-formate dehydrogenase ofClostridium thermoaceticum

      Sabyasachi Sarkar Samar K Das

      Rapid Communication Volume 104 Issue 4 August 1992 pp 533-534

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      Permanent link:
      https://www.ias.ac.in/article/fulltext/jcsc/104/04/0533-0534

    • Keywords

       

      CO2 fixation; functional model; tungsten-formate dehydrogenase; Clostridium thermoaceticum ; nit-1 reconstitution assay

    • Abstract

       

      (NEt4)2[WIVO(S2C2(CN)2)2] (1), isolated by reaction of Na2 WO4, Na2S2C2(CN)2 (Na2mnt) in acidified (pH5.5) aqueous medium in the presence of excess of sodium dithionite and NEt4Br, reduces CO2/HCO3− (pH 7.5) to yield HCOO− and (NEt4)2[WVIO2(S2C2(CN)2)2] (2) mimicking tungsten-formate dehydrogenase (W-FDH) activity. (1) reacts with Na2MoO4 in acidic medium to produce [MoIvO(S2C2(CN)2)2]2− implicating the displacement of tungsten by molybdenum from the cofactor complex in W-FDH.

    • Author Affiliations

       

      Sabyasachi Sarkar1 Samar K Das1

      1. Department of Chemistry, Indian Institute of Technology, Kanpur - 208 016, India

    • Dates

       
      Published
      August 1992
      Manuscript received
      3 February 1992

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