title: Study on energy transfer between carotenoid and chlorophyll a in cytochrome b6f complex from Bryopsis corticulans.
abstract: The excitation energy transfer between carotenoid and chlorophyll (Chl) in the cytochrome b ( 6 ) f complex from Bryopsis corticulans (B. corticulans), in which the carotenoid is 9-cis-alpha-carotene, was investigated by means of fluorescence excitation and sub-microsecond time-resolved absorption spectroscopies. The presence of efficient singlet excitation transfer from alpha-carotene to Chl a was found with an overall efficiency as high as approximately approximately 24%, meanwhile the Chl a-to-alpha-carotene triplet excitation transfer was also evidenced. Circular dichroism spectroscopy showed that alpha-carotene molecule existed in an asymmetric environment and Chl a molecule had a certain orientation in this complex.
authors: Key Laboratory of Photosynthesis and Environmental Molecular Physiology, Institute of Botany, Chinese Academy of Sciences, Nan Xincun 20, Xiangshan, 100093, Beijing, P.R. China. lbli@ibcas.ac.cn
authors: Bin-Xing
authors: BX
authors: Li
authors: Ping
authors: P
authors: Zuo
authors: Xiao-Bo
authors: XB
authors: Chen
authors: Liang-Bi
authors: LB
authors: Li
authors: Jian-Ping
authors: JP
authors: Zhang
authors: Jian-Ping
authors: JP
authors: Zhang
authors: Ting-Yun
authors: TY
authors: Kuang