Removal of 33 kDa extrinsic protein specifically stabilizes the S2QA− charge pair in photosystem II
- 26 January 1987
- journal article
- Published by Wiley in FEBS Letters
- Vol. 211 (2) , 215-220
- https://doi.org/10.1016/0014-5793(87)81439-4
Abstract
Removal of the 33 kDa extrinsic protein from photosystem (PS) II membranes resulted in markedly increased stabilization of the S2QA − charge pair as measured by thermoluminescence. The stabilization increase was specific for the S2QA − charge pair and did not require any special herbicide. The effect was fully reversed by reconstitution with the 33 kDa protein, but not at all by high concentrations of Cl−, as opposed to those effects known to be reversed by 200 mM Cl− . The data are interpreted as indicating a structural change of the donor and/or acceptor side of PS II dependent on association with the 33 kDa extrinsic protein.Keywords
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