ELECTROCHEMISTRY OF HORSE HEART CYTOCHROME-C

被引：322

作者：

EDDOWES, MJ ^{[1
]}

HILL, HAO ^{[1
]}

机构：

[1] INORGAN CHEM LAB,OXFORD OX1 3QR,ENGLAND

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 1979年 / 101卷 / 16期

关键词：

D O I：

10.1021/ja00510a003

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The electrochemical behavior of horse heart ferricytochrome c at a gold electrode in the presence of 4, 4ʹ-bipyridyl is described. DC and AC cyclic voltammograms are obtained due to the quasi-reversible electrode reaction of cytochrome c, which has E 1/2r = +0.255 V vs. NHE. Combined coulometric and spectrophotometric studies confirm that the one-electron reduction is due to the cytochrome. 1, 2-Bis(4-pyridyl)ethylene is also effective in promoting electron transfer, The results are consistent with adsorption of the heterocycle to form a conducting layer on the gold surface. Variation of the AC cyclic voltammetry with pH indicates the existence of an electroactive and an electroinactive form of cytochrome c at alkaline pH while at acidic pH protonation of 4, 4ʹ-bipyridyl appears to affect the observed electrochemistry. © 1979, American Chemical Society. All rights reserved.

引用

页码：4461 / 4464

页数：4

共 25 条

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