文章基本信息

标题：Primary step in the bacteriorhodopsin photocycle: photochemistry or excitation transfer?
本地全文：下载
作者：M A El-Sayed ; B Karvaly ; J M Fukumoto 等
期刊名称：Proceedings of the National Academy of Sciences
印刷版ISSN：0027-8424
电子版ISSN：1091-6490
出版年度：1981
卷号：78
期号：12
页码：7512-7516
DOI：10.1073/pnas.78.12.7512
语种：English
出版社：The National Academy of Sciences of the United States of America
摘要：The absorption polarization of the first intermediate (K610) formed at room temperature in the proton-pumping photochemical cycle of bacteriorhodopsin (bR) shows a strong correlation with the polarization direction of the photolyzed parent molecule. The results suggest that, unlike other photosynthetic systems, excitation transfer does not take place prior to the primary photochemical change in bR. These observations together with the previously observed circular dichroism and the polarization temperature dependence are discussed in terms of the exciton structure and the nature of the absorption bandwidths (i.e., homogeneous vs. inhomogeneous) of the bR monomers within the trimer structure.