Vzaimodeistvie ubisemikhinoma s vysokopotentsial'nym zhelezo-sernym tsentrom suktsinatdegidrogenazy submitokhondrial'nykh chastits. EPR-issledovanie pri 240 i 12 gradusa K.

Translated title of the contribution: Interaction of ubisemiquinone with the high-potential iron-sulfur center of submitochondrial particle succinate dehydrogenase. EPR study at 240 and 12 degrees K

A. N. Tikhonov, D. S. Burbaev, I. V. griogolava, A. A. Konstantinov, M. I. Ksenzenko

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

The ESR spectra of beef heart submitochondrial particles were measured in the same samples at 240 degrees and 12 degrees K. There is close similarity between the inhibitory action of alpha-thenoyltrifluoroacetone, ethanol and ferricyanide on the non-saturating free radical signal SQ-2 observed at 240 degree K and peak at g=1.99 (and 2.04) which is visible only at very low temperatures. This result strongly supports our previous proposal that both ESR signals are manifestations of the ubisemiquinone complex with the High-Potential Iron-Sulfur protein of succinate dehydrogenase.

Original languageRussian
Pages (from-to)734-736
Number of pages3
JournalBiofizika
Volume22
Issue number4
Publication statusPublished - Jul 1 1977
Externally publishedYes

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ASJC Scopus subject areas

  • Medicine(all)

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