第八个细菌叶绿素完成了FMO蛋白中的激发能漏斗。
The Eighth Bacteriochlorophyll Completes the Excitation Energy Funnel in the FMO Protein.
作者信息
Schmidt Am Busch Marcel, Müh Frank, El-Amine Madjet Mohamed, Renger Thomas
机构信息
†Institut für Theoretische Physik, Johannes Kepler Universität Linz, Altenberger Strasse 69, 4040 Linz, Austria.
‡Institut für Chemie und Biochemie, Freie Universität Berlin, Fabeckstrasse 36a, D-14195 Berlin, Germany.
出版信息
J Phys Chem Lett. 2011 Jan 20;2(2):93-8. doi: 10.1021/jz101541b. Epub 2010 Dec 23.
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.
芬纳-马修斯-奥尔森（FMO）捕光蛋白将绿色硫细菌中的外天线系统（叶绿体/基板）与反应中心复合物相连。自70年代中期首次确定其结构以来，这种色素-蛋白复合物已成为研究激发能转移的重要模型系统。最近，在这种同三聚体的每个亚基中发现了一种额外的细菌叶绿素a（第八种）色素。我们基于结构对FMO蛋白光学性质的计算表明，第八种色素是与基板的连接物，证实了晶体学研究最近的推测。
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