The Eighth Bacteriochlorophyll Completes the Excitation Energy Funnel in the FMO Protein

被引:173
作者
Busch, Marcel Schmidt Am [1 ]
Mueh, Frank [2 ]
Madjet, Mohamed El-Amine [2 ]
Renger, Thomas [1 ]
机构
[1] Johannes Kepler Univ Linz, Inst Theoret Phys, A-4040 Linz, Austria
[2] Free Univ Berlin, Inst Chem & Biochem, D-14195 Berlin, Germany
来源
JOURNAL OF PHYSICAL CHEMISTRY LETTERS | 2011年 / 2卷 / 02期
关键词
BACTERIUM CHLOROFLEXUS-AURANTIACUS; QUANTUM COHERENCE; PROSTHECOCHLORIS-AESTUARII; ANTENNA PROTEIN; PHOTOSYSTEM-I; CHLOROSOMES; FLUORESCENCE; ORGANIZATION; DYNAMICS; SPECTRA;
D O I
10.1021/jz101541b
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The Fenna-Matthews-Olson (FMO) light-harvesting protein connects the outer antenna system (chlorosome/baseplate) with the reaction center complex in green sulfur bacteria. Since its first structure determination in the mid-70s, this pigment-protein complex has become an important model system to study excitation energy transfer. Recently, an additional bacteriochlorophyll a(the eighth) pigment was discovered in each subunit of this homotrimer. Our structure-based calculations of the optical properties of the FMO protein demonstrate that the eighth pigment is the linker to the baseplate, confirming recent suggestions from crystallographic studies.
引用
收藏
页码:93 / 98
页数:6
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