The use of acetylated ferricytochrome C for the detection of superoxide radicals produced in biological membranes
- 22 July 1975
- journal article
- Published by Elsevier BV in Biochemical and Biophysical Research Communications
- Vol. 65 (2), 597-603
- https://doi.org/10.1016/s0006-291x(75)80188-4
Abstract
Acetylation of 60% of lysine residues of horse heart ferricytochrome c results in more than 95% decrease of its ability to be reduced by mitochondrial and microsomal reductases and to become oxidized (after chemical reduction) by mitochondrial oxidase. The ability of acetylated ferricytochrome c to be reduced by 02− radicals is maintained, making this derivative useful for the detection of 02− radicals in biological systems containing cytochrome c reductases or oxidases. Mitochondrial membranes can reduce acetylated ferricytochrome c at a rate of 0.5 nmoles.min−1.mg−1. Such a reaction is 82% inhibited by 2.8 × 10−8M superoxide dismutase.Keywords
This publication has 11 references indexed in Scilit:
- Free radical reduction of ferricytochrome-cBiochemical and Biophysical Research Communications, 1975
- Superoxide radicals as precursors of mitochondrial hydrogen peroxideFEBS Letters, 1974
- Superoxide dismutase: Improved assays and an assay applicable to acrylamide gelsAnalytical Biochemistry, 1971
- Aminopyrine demethylase kinetic evidence for multiple microsomal activitiesBiochemical Pharmacology, 1970
- [15] Isolation of liver or kidney mitochondriaPublished by Elsevier BV ,1967
- [34] Preparation, properties, and conditions for assay of phosphorylating electron transport particles (ETPH) and its variationsPublished by Elsevier BV ,1967
- [35] Detection of peptides by chemical methodsPublished by Elsevier BV ,1967
- THE FORMATION AND DECAY OF H2O3 AND HO2 IN ELECTRON-IRRADIATED AQUEOUS SOLUTIONS1The Journal of Physical Chemistry, 1963
- THE STRUCTURE OF CYTOCHROME CThe Journal of Biochemistry, 1958
- Studies on the fatty acid oxidizing system of animal tissues VIII. Reconstruction of fatty acid oxidizing system with triphenyltetrazolium as electron acceptorBiochimica et Biophysica Acta, 1954