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

页码：712 / 716

页数：5

共 37 条

[31] Coupling of nuclear wavepacket motion and charge separation in bacterial reaction centers [J].

Shuvalov, VA ;

Yakovlev, AG .

FEBS LETTERS, 2003, 540 (1-3) :26-34

[32] Light-induced structural changes in photosynthetic reaction center: Implications for mechanism of electron-proton transfer [J].

Stowell, MHB ;

McPhillips, TM ;

Rees, DC ;

Soltis, SM ;

Abresch, E ;

Feher, G .

SCIENCE, 1997, 276 (5313) :812-816

[33] New and unexpected routes for ultrafast electron transfer in photosynthetic reaction centers [J].

van Brederode, ME ;

van Grondelle, R .

FEBS LETTERS, 1999, 455 (1-2) :1-7

[34] Primary electron transfer kinetics in membrane-bound Rhodobacter sphaeroides reaction centers: A global and target analysis [J].

vanStokkum, IHM ;

Beekman, LMP ;

Jones, MR ;

vanBrederode, ME ;

vanGrondelle, R .

BIOCHEMISTRY, 1997, 36 (38) :11360-11368

[35] Tuning heme redox Potentials in the cytochrome c subunit of photosynthetic reaction centers [J].

Voigt, P ;

Knapp, EW .

JOURNAL OF BIOLOGICAL CHEMISTRY, 2003, 278 (52) :51993-52001

[36] Electron transfer in deuterated reaction centers of Rhodobacter sphaeroides at 90 K according to femtosecond spectroscopy data [J].

Yakovlev, AG ;

Shuvalov, VA .

BIOCHEMISTRY-MOSCOW, 2003, 68 (06) :603-610

[37] Nuclear wave packet motion between P* and P+BA- potential surfaces with a subsequent electron transfer to HA in bacterial reaction Centers at 90 K.: Electron transfer pathway [J].

Yakovlev, AG ;

Shkuropatov, AY ;

Shuvalov, VA .

BIOCHEMISTRY, 2002, 41 (47) :14019-14027

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