El-Sayed M A, Karvaly B, Fukumoto J M
Proc Natl Acad Sci U S A. 1981 Dec;78(12):7512-6. doi: 10.1073/pnas.78.12.7512.
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.
在细菌视紫红质（bR）的质子泵浦光化学循环中，室温下形成的第一个中间体（K610）的吸收极化与光解母体分子的极化方向呈现出强烈的相关性。结果表明，与其他光合系统不同，在bR的初级光化学变化之前不会发生激发转移。结合先前观察到的圆二色性和极化温度依赖性，根据三聚体结构内bR单体的激子结构和吸收带宽的性质（即均匀与非均匀）对这些观察结果进行了讨论。
