Tuning electron transfer by ester-group of chlorophylls in bacterial photosynthetic reaction center

被引：19
|
作者：
Ishikita, H [1 ]
Loll, B [1 ]
Biesiadka, J [1 ]
Galstyan, A [1 ]
Saenger, W [1 ]
Knapp, EW [1 ]
机构：
[1] Free Univ Berlin, Dept Biol Chem & Pharm, Inst Chem Crystallog, D-14195 Berlin, Germany
来源：
FEBS LETTERS | 2005年 / 579卷 / 03期
关键词：
bacterial photosynthetic reaction center; photosystem II; redox potential; electron transfer; chlorophyll; P680;
D O I：
10.1016/j.febslet.2004.12.049
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：
Accessory chlorophylls (B-A/B) in bacterial photosynthetic reaction center play a key role in charge-separation. Although light-exposed and dark-adapted bRC crystal structures are virtually identical, the calculated B-A redox potentials for one-electron reduction differ. This can be traced back to different orientations of the B-A ester-group. This tuning ability of chlorophyll redox potentials modulates the electron transfer from SP* to B-A. (C) 2005 Federation of European Biochemical Societies. Published by Elsevier B.V. All rights reserved.
引用
收藏
页码：712 / 716
页数：5
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