[Effect of indoleacetic acid on the proton conductivity of biological membranes].
The effect of indolylacetic acid (IAA) on proton conductivity of tylacoid membranes of isolated pea chloroplasts at pH 5.5-8.0 and of artificial phospholipid membranes at pH 7.5 were studied. IAA was shown to decrease the stationary proton gradient value and increase those of the dissociation constant and electron transport rate in chloroplasts, while in the artificial phospholipid membranes it increased the proton conductivity. The membrane lipid phase is supposed to be a possible result of phytohormone action, IAA transporting the protons according to the monomeric mechanism.
D001692:Biological Transport / Q000187:drug effects; D002462:Cell Membrane / Q000378:metabolism*; D002736:Chloroplasts / Q000378:metabolism; D007210:Indoleacetic Acids / Q000494:pharmacology*; D008051:Lipid Bilayers; D010539:Permeability; D011522:Protons
D007210:Indoleacetic Acids; D008051:Lipid Bilayers; D011522:Protons
Deĭstvie indoliluksusnoĭ kisloty na protonnuiu provodimost' biologicheskikh membran.