Effect of cations and protons on chloroplast and etioplast membranes
Reĭngard, T.A.; Manuil'skaia, S.V.; Sytnik, S.K.; Polishchuk, A.I.; Zaĭtseva, N.A.
Biokhimiia 48(5): 782-787
1983
ISSN/ISBN: 0320-9725 PMID: 6871287 Document Number: 200001
The stacking of grana and intergrana thylakoids of chloroplast, etioplast and etiochloroplast membranes was studied at various concentrations of H+ and bivalent cations. Bivalent cations and H+ cause stacking of all types of the membranes tested and are not strictly correlated with the presence of a well-formed light-harvesting chlorophyll a/b-protein complex. In preparations of intergrana thylakoids (in contrast to those of grana thylakoids) the effects of cations were minimal. The stacking of intergrana thylakoids is more appreciable in the presence of H+ which is probably due to the peculiarities of compounds located on the membrane surface.