Reactivity of [Fe] and [Ni-Fe-Se] hydrogenases with their oxido-reduction partner: the tetraheme cytochrome c3. |
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Authors: | P Bianco J Haladjian M Bruschi F Guerlesquin |
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Institution: | Laboratoire de Chimie et Electrochimie des Complexes, C.N.R.S., Université de Provence, Marseille, France. |
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Abstract: | In order to understand the electron transfer mechanisms for the Fe] and Ni-Fe] hydrogenases, a kinetic study of cytochrome c3 reduction has been undertaken. Cyclic voltammetry and controlled-potential amperometry techniques have been used to investigate the intermolecular electron-transfer reaction between cytochrome c3 and Fe] hydrogenase from Desulfovibrio vulgaris Hildenborough. Electron-transfer cross-reactions between Fe] or Ni-Fe-Se] hydrogenase and cytochrome c3 from Desulfovibrio vulgaris Hildenborough or Desulfovibrio desulfuricans Norway have been studied. Some structural implications are considered from these experimental data. |
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