Allakhverdiev S I, Klimov V V, Proskuriakov I I
Biofizika. 1988 Jul-Aug;33(4):600-3.
The effect of reversible extraction of Mn on ESR signal II arising from the oxidized secondary electron donor (Z+) and the ESR doublet signal related to reduced spin-coupled pheophytin (pheo -) and "primary" electron acceptor (PA- -Fe (2+)) has been studied in oxygen evolving preparations of the photosystem 2. It is demonstrated that Mn extraction does not affect both dark and photoinduced ESR signal II and ESR doublet. A conclusion is made that Mn is not a component of the secondary electron donor Z of the Photosystem 2 and its complete removal has no effect on the exchange interaction of Pheo(-) and the PQ(-) -Fe(2+) complex.
在光系统2的放氧制剂中，研究了可逆提取锰对氧化的次级电子供体（Z+）产生的ESR信号II以及与还原的自旋耦合脱镁叶绿素（pheo -）和“初级”电子受体（PA--Fe(2+)）相关的ESR双峰信号的影响。结果表明，锰的提取不影响暗态和光诱导的ESR信号II以及ESR双峰。得出的结论是，锰不是光系统2的次级电子供体Z的组成部分，其完全去除对Pheo(-)和PQ(-)-Fe(2+)复合物的交换相互作用没有影响。
