Spectral Diffusion and Electron-Phonon Coupling of the B800 BChl a Molecules in LH2 Complexes from Three Different Species of Purple Bacteria

被引：21

作者：

Baier, J. ^{[1
]}

Gabrielsen, M. ^{[2
]}

Oellerich, S. ^{[1
]}

Michel, H. ^{[3
]}

van Heel, M. ^{[4
]}

Cogdell, R. J. ^{[5
]}

Koehler, J. ^{[1
]}

机构：

[1] Univ Bayreuth, Res Ctr Biomacromol, Bayreuth, Germany

[2] Univ Glasgow, Fac Biomed & Life Sci, Div Infect & Immun, Glasgow, Lanark, Scotland

[3] Max Planck Inst Biophys, Dept Mol Membrane Biol, D-6000 Frankfurt, Germany

[4] Univ London Imperial Coll Sci Technol & Med, Dept Biol Sci, London, England

[5] Univ Glasgow, Fac Biomed & Life Sci, Div Mol & Cellular Biol, Glasgow, Lanark, Scotland

来源：

BIOPHYSICAL JOURNAL | 2009年 / 97卷 / 09期

基金：

英国生物技术与生命科学研究理事会;

关键词：

LIGHT-HARVESTING COMPLEX; SINGLE-MOLECULE; LOW-TEMPERATURE; ENERGY-TRANSFER; RHODOPSEUDOMONAS-ACIDOPHILA; CRYSTAL-STRUCTURE; BACTERIOCHLOROPHYLL; SPECTROSCOPY; PROTEINS; SPHAEROIDES;

D O I：

10.1016/j.bpj.2009.07.052

中图分类号：

Q6 [生物物理学];

学科分类号：

071011 ;

摘要：

We have investigated the spectral diffusion and the electron-phonon coupling of B800 bacteriochlorophyll a molecules in the peripheral light-harvesting complex LH2 for three different species of purple bacteria, Rhodobacter sphaeroides, Rhodospirillum molischianum, and Rhodopseudomonas acidophila. We come to the conclusion that B800 binding pockets for Rhodobacter sphaeroides and Rhodopseudomonas acidophila are rather similar with respect to the polarity of the protein environment but that the packaging of the alpha beta-polypeptides seems to be less tight in Rb. sphaeroides with respect to the other two species.

引用

页码：2604 / 2612

页数：9

共 51 条

[1] DETECTION AND SPECTROSCOPY OF SINGLE PENTACENE MOLECULES IN A PARA-TERPHENYL CRYSTAL BY MEANS OF FLUORESCENCE EXCITATION [J].