作者:Lars Lasogga、Wolfgang Rettig、Harald Otto、Ingrid Wallat、Julia Bricks
DOI:10.1021/jp904132f
日期:2010.2.11
as reconstituted chromophore−protein complexes were investigated as model compounds for the protonated Schiff base chromophore in bacteriorhodopsin (bR) both experimentally and theoretically. Charge distribution, donor−acceptor strength, and the shift of the absorption energy are correlated. The effect of the external electrostatic field was tested with a compound carrying an additional nonconjugated
在实验和理论上,研究了供体-受体取代的苯乙烯和苯基丁二烯,其取代基的供体和受体强度各不相同,以及作为重组生色团-蛋白质配合物的细菌视紫红质(bR)中质子化席夫碱生色团的模型化合物。电荷分布,施主-受主强度和吸收能的移动是相关的。用携带额外的非共轭电荷的化合物测试了外部静电场的影响。由外部电荷引起的过极化的概念,即,反转S 0和S 1中两个主要共振结构的相对重要性,已被强调并与一个简单的定性2×2交互模型有关。可变供体方法是一种新的方法,可以更好地了解细菌视紫红质中的视蛋白转移。