Determination of depth of immersion of chlorophyll P680, pheophytin, and a secondary electron donor in the subchloroplast preparations of photosystem Ii from pea
Allakhverdiev, S.I.; Kulikov, A.V.; Klimov, V.V.; Bogatyrenko, V.R.; Likhtenshteĭn, G.I.
Biofizika 34(3): 434-438
1989
ISSN/ISBN: 0006-3029 PMID: 22893929 Document Number: 332337
The immersion depths (r) of the main functional components of the reaction centres of the Photosystem 2 in the thylakoid membranes were determined by ESR at 77K. It was shown that P680(+), Pheo(-) (pheophytin), and Z(+) (secondary electron donor) the r value was 2-4, 4-7 and 14-20 A, respectively. On the basis of these and reference data a model of location of the Photosystem 2 reaction centre components in the photosynthetic membrane was suggested.