Microperoxidase-11-mediated reduction of hemoproteins : electrocatalyzed reduction of cytochrome c, myoglobin and hemoglobin and electrocatalytic reduction of nitrate in the presence of cytochrome-dependent nitrate reductase

Narvaez A; Dominguez E; Katakis I; Katz E; Ranjit KT; Ben-Dov I; Willner I

Journal of Electroanalytical Chemistry, Vol.430, No.1-2, 227-233, 1997

DOI10.1016/S0022-0728(97)00242-8 Export Citation

Microperoxidase-11-mediated reduction of hemoproteins : electrocatalyzed reduction of cytochrome c, myoglobin and hemoglobin and electrocatalytic reduction of nitrate in the presence of cytochrome-dependent nitrate reductase

Narvaez A, Dominguez E, Katakis I, Katz E, Ranjit KT, Ben-Dov I, Willner I

Microperoxidase-11 (MP-11) assembled onto an Au electrode catalyzes the electroreduction of a series of hemoproteins : cytochrome c (Cyt. c) myoglobin (Mb) and hemoglobin (Hb). The electrical contact between MP-11 and the hemoproteins originates from intermolecular complexes between MP-11 and the different hemoproteins. The MP-11-functionalized electrode catalyzes the reduction of cytochrome-dependent nitrate reductase and mediates the bioelectrocatalyzed reduction of nitrate to nitrite. The systems provide assemblies mimicking inter-protein electron transfer in hemoproteins.

Keywords:ELECTRON-TRANSFER REACTION;CHEMICALLY MODIFIED ELECTRODES;MODIFIED GOLD ELECTRODES;ELECTROCHEMICAL REDUCTION;MONOLAYER ELECTRODES;CATALYTIC REDUCTION;SURFACTANT FILMS;REDOX PROTEINS;METHYLENE-BLUE;OXIDATION