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

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

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 journal › Article › peer-review

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.

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
Original language	Russian
Pages (from-to)	734-736
Number of pages	3
Journal	Biofizika
Volume	22
Issue number	4
Publication status	Published - Jul 1 1977
Externally published	Yes

ASJC Scopus subject areas

Medicine(all)

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Vzaimodeistvie ubisemikhinoma s vysokopotentsial'nym zhelezo-sernym tsentrom suktsinatdegidrogenazy submitokhondrial'nykh chastits. EPR-issledovanie pri 240 i 12 gradusa K. / Tikhonov, A. N.; Burbaev, D. S.; griogolava, I. V.; Konstantinov, A. A.; Ksenzenko, M. I.

In: Biofizika, Vol. 22, No. 4, 01.07.1977, p. 734-736.

Research output: Contribution to journal › Article › peer-review

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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.",

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