Protein Control of True, Gated, and Coupled Electron Transfer Reactions
نویسندگان
چکیده
منابع مشابه
Simultaneous true, gated, and coupled electron-transfer reactions and energetics of protein rearrangement.
Cytochromes c(6) and f react by three et mechanisms under similar conditions. We report temperature and viscosity effects on the protein docking and kinetics of (3)Zncyt c(6)+cyt f(III)→Zncyt c(6)(+)+cyt f(II). At 0.5-40.0°C, this reaction occurs within the persistent (associated) diprotein complex with the rate constant k(pr) and within the transient (collision) complex with the rate constant ...
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The kinetics of proton-coupled electron-transfer (pcet) reactions are reported for Mn4O4(O2PPh2)6, 1, and [Mn4O4(O2PPh2)6] , 1 , with phenothiazine (pzH). Both pcet reactions form 1H, by H transfer to 1 and by hydride transfer to 1 . Surprisingly, the rate constants differ by only 25% despite large differences in the formal charges and driving force. The driving force is proportional to the dif...
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Two new ruthenium(II) complexes bearing dissociable protons, [Ru(trpy)(H(2)bim)Cl]PF(6) (1) and [Ru(trpy)(H(2)bim)(OH(2))](PF(6))(2) (2) (H(2)bim = 2,2'-biimidazole and trpy = 2,2':6',2''-terpyridine), were synthesized and characterized, where the H(2)bim and M-OH(2) moieties are expected to serve as proton-dissociation sites. Single crystal X-ray diffraction analyses revealed that the H(2)bim ...
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ژورنال
عنوان ژورنال: Accounts of Chemical Research
سال: 2008
ISSN: 0001-4842,1520-4898
DOI: 10.1021/ar700252c