Study on energy transfer between carotenoid and chlorophyll a in cytochrome b6f complex from Bryopsis corticulans

Study on energy transfer between carotenoid and chlorophyll a in cytochrome b6f complex from Bryopsis corticulans

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 s...

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Veröffentlicht in:Photosynthesis research 2006-04, Vol.88 (1), p.43-50
Hauptverfasser: Li, Bin-Xing, Zuo, Ping, Chen, Xiao-Bo, Li, Liang-Bi, Zhang, Jian-Ping, Kuang, Ting-Yun
Format: Artikel
Sprache:eng
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Carotenoids - metabolism
Chlorophyll - metabolism
Chlorophyta - metabolism
Cytochrome b6f Complex - metabolism
Energy Transfer
Spectrometry, Fluorescence
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container_issue 1
container_start_page 43
container_title Photosynthesis research
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creator Li, Bin-Xing
Zuo, Ping
Chen, Xiao-Bo
Li, Liang-Bi
Zhang, Jian-Ping
Kuang, Ting-Yun
description 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.
doi_str_mv 10.1007/s11120-005-9020-1
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subjects Carotenoids - metabolism
Chlorophyll - metabolism
Chlorophyta - metabolism
Cytochrome b6f Complex - metabolism
Energy Transfer
Spectrometry, Fluorescence
title Study on energy transfer between carotenoid and chlorophyll a in cytochrome b6f complex from Bryopsis corticulans
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