ICCAS OpenIR
Singlet oxygen formation and chlorophyll a triplet excited state deactivation in the cytochrome b (6) f complex from Bryopsis corticulans
Ma, Fei1,2; Chen, Xiao-Bo3; Sang, Min3; Wang, Peng1; Zhang, Jian-Ping1; Li, Liang-Bi3; Kuang, Ting-Yun3
2009-04-01
Source PublicationPHOTOSYNTHESIS RESEARCH
ISSN0166-8595
Volume100Issue:1Pages:19-28
AbstractWe have attempted to investigate the correlation between the detergent-perturbed structural integrity of the Cyt b (6) f complex from the marine green alga Bryopsis corticulans and its photo-protective properties, for which the nonionic detergents n-octyl-beta-d-glucopyranoside (beta-OG) and n-dodecyl-beta-d-maltoside (beta-DM), respectively, were used for the preparation of Cyt b (6) f, and the singlet oxygen (O-1(2)*) production as well as the triplet excited-state chlorophyll a ((3)Chl a*) formation and deactivation were examined by spectroscopic means. Near-infrared luminescence of O-1(2) * (similar to 1,270 nm) on photo-irradiation was detected for the beta-OG preparation where the complex is mainly in oligomeric state, but not for the beta-DM one in which the complex exists in dimeric form. Under anaerobic condition, photo-excitation of Chl a in the beta-DM preparation generated (3)Chl a* with a lower quantum yield of I broken vertical bar(T) similar to 0.02 and a longer lifetime of similar to 600 mu s with respect to those as in the case of beta-OG preparation, I broken vertical bar(T) similar to 0.12 and 200-300 mu s. These results prove that the enzymatically active and intact Cyt b (6) f complex on photo-excitation tends to produce little (3)Chl a* or O-1(2) *, which implies that the pigment-protein assembly of Cyt b (6) f complex per se is crucial for photo-protection.
KeywordCytochrome b(6)f Photo Protection Singlet Oxygen Triplet Excited State Excitation Energy Transfer
DOI10.1007/s11120-009-9418-2
Indexed BySCI
Language英语
WOS IDWOS:000265569800003
PublisherSPRINGER
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/65768
Collection中国科学院化学研究所
Corresponding AuthorZhang, Jian-Ping
Affiliation1.Renmin Univ China, Dept Chem, Beijing 100872, Peoples R China
2.Chinese Acad Sci, Inst Chem, BNLMS, State Key Lab Struct Chem Unstable & Stable Speci, Beijing 100080, Peoples R China
3.Chinese Acad Sci, Inst Bot, Key Lab Photosynth & Environm Mol Physiol, Beijing 100093, Peoples R China
Recommended Citation
GB/T 7714
Ma, Fei,Chen, Xiao-Bo,Sang, Min,et al. Singlet oxygen formation and chlorophyll a triplet excited state deactivation in the cytochrome b (6) f complex from Bryopsis corticulans[J]. PHOTOSYNTHESIS RESEARCH,2009,100(1):19-28.
APA Ma, Fei.,Chen, Xiao-Bo.,Sang, Min.,Wang, Peng.,Zhang, Jian-Ping.,...&Kuang, Ting-Yun.(2009).Singlet oxygen formation and chlorophyll a triplet excited state deactivation in the cytochrome b (6) f complex from Bryopsis corticulans.PHOTOSYNTHESIS RESEARCH,100(1),19-28.
MLA Ma, Fei,et al."Singlet oxygen formation and chlorophyll a triplet excited state deactivation in the cytochrome b (6) f complex from Bryopsis corticulans".PHOTOSYNTHESIS RESEARCH 100.1(2009):19-28.
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