| Literature DB >> 240393 |
Y Sawada, T Iyanagi, I Yamazaki.
Abstract
Univalent oxidation-reduction reactions coupled with the oxygen-superoxide system were investigated in the reactions shown in eq 3 and 8, where Q and Q.- stand for p-benzoquinone and p-benzosemiquinone, respectively. From kinetic experiments the following rate constants were obtained at pH 7.0:k3 = 4.5 x 10(4) M-1 sec-1 and k8 = 3 x 10(-2) M-1 sec-1. With known values of k-3 and k-8, and of E0' for the systems Q-Q.- (0.10 V) and Cyt c3+ - Cyt c2+ (0.255 V), the calculated values of E0(O2-O2.-) were found to lie in the range between -0.27 and -0.33 V.Entities:
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Year: 1975 PMID： 240393 DOI： 10.1021/bi00688a007
Source DB: PubMed Journal: Biochemistry ISSN： 0006-2960 Impact factor: 3.162