Catalytic reduction of O2 by cytochrome C using a synthetic model of cytochrome C oxidase.
Catalytic reduction of O2 by cytochrome C using a synthetic model of cytochrome C oxidase.
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DOI:
10.1021/ja9001579
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发表时间:
2009-04-15
影响因子:
15
通讯作者:
Yang Y
中科院分区:
文献类型:
--
作者:
Collman JP;Ghosh S;Dey A;Decréau RA;Yang Y
Cytochrome c oxidase (CcO) catalyzes the four-electron reduction of oxygen to water, the one-electron reductant Cytochrome c (Cytc) being the source of electrons. Recently we reported a functional model of CcO that electrochemically catalyzes the four-electron reduction of O2 to H2O (Collman et. al. Science, 2007, 315, 1565). The current paper shows that the same functional CcO model will catalyze the four-electron reduction of O2 using the actual biological reductant Cytc in a homogeneous solution. Both single and steady-state turnover kinetic studies indicate that O2 binding is rate determining and O-O bond cleavage and electron transfer from reduced Cytc to the oxidized model complex are relatively fast.
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