Kinetika élektronnogo transporta, perenos protonov i fotofosforilirovanie v khloroplastakh i ikh sviaz' s termoindutsirovannymi strukturnymi perestroǐkami tilakoidnoǐ membrany.

Translated title of the contribution: Kinetics of electron transport, proton transfer and photophosphorylation in chloroplasts and their relation to temperature-induced structural changes in the thylakoid membrane

A. N. Tikhonov, A. A. Timoshin, L. A. Bliumenfel'd

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

Effects of various temperatures on the rates of electron transport between two photosystems, the light-induced uptake of protons, kinetics of proton efflux from the chloroplasts in the dark and photophosphorylation were studied in isolated chloroplasts. There are correlations between the physical state of thylakoid membrane and the rates of electron- and proton transport processes. The temperature dependence of "structural" parameter (fluidity of lipids in membrane) as well as the rates of electron- and proton transport processes reveal the breaks under the same temperatures. Stimulation of photophosphorylation by temperature increasing correlates with the heat activation of chloroplasts latent ATPase due to thermoinduced structural changes in the heat activation of chloroplasts latent ATPase due to thermoinduced structural changes in the protein part of CF0-CF1 complex. The rate of photophosphorylation also correlates with the physical state of membrane lipids. Thermoinduced "melting" of the thylakoid membrane inhibits the ATP formation because of a decrease in photosystem 2 photochemical activity and stimulation of membrane conductivity for protons.

Translated title of the contributionKinetics of electron transport, proton transfer and photophosphorylation in chloroplasts and their relation to temperature-induced structural changes in the thylakoid membrane
Original languageRussian
Pages (from-to)1236-1248
Number of pages13
JournalMolekulyarnaya Biologiya
Volume17
Issue number6
Publication statusPublished - Nov 1 1983
Externally publishedYes

ASJC Scopus subject areas

  • Medicine(all)

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