Investigation of the interaction of the water oxidising manganese complex of photosystem II with the aqueous solvent environment

被引：16

作者：

Evans, MCW ^{[1
]}

Gourovskaya, K ^{[1
]}

Nugent, JHA ^{[1
]}

机构：

[1] UCL, Dept Biol, London WC1E 6BT, England

来源：

FEBS LETTERS | 1999年 / 450卷 / 03期

基金：

英国生物技术与生命科学研究理事会;

关键词：

photosystem II; water oxidation; manganese complex; electron spin echo envelope modulation; photosynthesis; photosynthetic oxygen evolution;

D O I：

10.1016/S0014-5793(99)00517-7

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

Interaction of the water oxidising manganese complex of photosystem II with the aqueous environment has been investigated using electron paramagnetic resonance spectroscopy and electron spin echo envelope modulation spectroscopy to detect interaction of [(2)H]methanol with the complex in the S(2) state. The experiments show that the classical S(2) multiline signal is associated with a manganese environment which is not exposed to the aqueous medium. An electron paramagnetic resonance spectroscopy signal, also induced by 200 K illumination, showing (2)H modulation by methanol in the medium and a modified multiline Electron paramagnetic resonance spectroscopy signal formed in parallel to it, are suggested to be associated with a second manganese environment exposed to the medium. (C) 1999 Federation of European Biochemical Societies.

引用

页码：285 / 288

页数：4

共 18 条

[11] THE EFFECTS OF CALCIUM DEPLETION ON THE O-2-EVOLVING COMPLEX IN SPINACH PS-II - THE S-1(ASTERISK)-STATE S-2(ASTERISK)-STATE AND S-3(ASTERISK)-STATE AND THE ROLE OF THE 17-KDA AND 23-KDA EXTRINSIC POLYPEPTIDES [J].