A picosecond circular dichroism study of photosynthetic reaction centers from Rhodobacter sphaeroides.
A picosecond circular dichroism study of photosynthetic reaction centers from Rhodobacter sphaeroides.
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球形红细菌光合反应中心的皮秒圆二色性研究。
DOI：
10.1016/s0005-2728(05)80093-3
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发表时间：
1991
期刊：
影响因子：
--
通讯作者：
Simon,JD
中科院分区：
文献类型：
--
作者：
Xie,XL;Simon,JD
报告了从球形红细菌分离的反应中心的光循环中的主要中间体的皮秒瞬态圆二色性光谱。两种电子转移中间体 (BChl2)+BPhL/−QA 和 (BChl2)+BPhLQA/− 的时间分辨圆二色光谱揭示了 800 nm 处的大的、非保守且相当稳定的 CD 带。这些结果表明，为了解释该生物系统的光学活性，需要包括激子相互作用以外的机制。
Picosecond transient circular dichroism spectra are reported for the primary intermediates in the photocycle of reaction centers isolated fromRhodobacter sphaeroides. The time-resolved circular dichroism spectra of the two electron transfer intermediates (BChl2)+BPhL/−QAand (BChl2)+BPhLQA/− reveal a large, nonconservative, and fairly stationary CD band at 800 nm. These results suggests that mechanisms other than exciton interactions need to be included in order to explain the optical activity of this biological system.