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Diverse Chromatic Acclimation Processes Regulating Phycoerythrocyanin and Rod-Shaped phycobilisome in Cyanobacteria

Molecular Plant 2019年第8期12卷 715-725页

作者： Yuu Hirose Song Ghihong Mai Watanabe Chinatsu Yonekawa Kazuyoshi Murata Masahiko Ikeuchi Toshihiko Eki Department of Environmental and Life Sciences Toyohashi University of Technology1-1 HibarigaokaTempakuToyohashiAichi 441-8580Japan National Institute for Physiological Sciences(NIPS) 38 NishigonakaMyodaijiOkazakiAichi 444-8585Japan Department of Life Sciences(Biology) The University of Tokyo3-8-1 KomabaMeguroTokyo 153-8902Japan

Cyanobacteria have evolved various photoacclimation processes to perform oxygenic photosynthesis under different light *** acclimation(CA)is a widely recognized and ecologically important type of photoacclimation,whereby cyanobacteria alter the absorbing light colors of a supermolecular antenna complex called the *** date,several CA variants that regulate the green-absorbing phycoerythrin(PE)and/or the red-absorbing phycocyanin(PC)within the hemi-discoidal form of phycobilisome have been *** this study,we identified a unique CA regulatory gene cluster encoding yellow-green-absorbing phycoerythrocyanin(PEC)and a rod-membrane linker protein(CpcL)for the rod-shaped form of *** the cyanobacterium Leptolyngbya *** 6406,we revealed novel CA variants regulating PEC(CA7)and the rod-shaped phycobilisome(CAO),which maximize yellowgreen light-harvesting capacity and balance the excitation of photosystems,respective!*** of the distribution of CA gene clusters in 445 cyanobacteria genomes revealed eight CA variants responding to green and red light,which are classified based on the presence of PEC,PE,cpcL,and CA photosensor *** analysis further suggested that the emergence of CA7 was a single event and preceded that of heterocystous strains,whereas the acquisition of CAO occurred multiple *** together,these results offer novel insights into the diversity and evolution of the complex cyanobacterial photoacclimation mechanisms.

关键词： cyanobacteria chromatic acclimation cyanobacteriochrome phycobilisome phycoerythrocyanin

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Crystal Structure of the N-terminal Domain of Linker LR and the Assembly of Cyanobacterial phycobilisome Rods

Crystal Structure of the N-terminal Domain of Linker LR and ...

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中国藻类学会第八次会员大会暨第十六次学术讨论会

作者： Xiang Gao~(a,b,1),Nan Zhang~(a,1),Tian-Di Wei~(a,1),Hai-Nan Su~a,Bin-Bin Xie~a,Chuang-Chuang Dong~a, Xi-Ying Zhang~a,Xiu-Lan Chen~a,Bai-Cheng Zhou~a,Zhi-XinWang~b,Jia-Wei Wu~b,Yu-Zhong Zhang~(a,*) a State Key Laboratory of Microbial Technology,Marine Biotechnology Research Center, Shandong University,Jinan,250100,China b The Ministry of Education Key Laboratory of Bioinformatics,Department of Biological Sciences and Biotechnology,Tsinghua University,Beijing,100084,China.

＜正＞phycobilisomes are light-harvesting supramolecular complexes in cyanobacteria and red *** play a pivotal role in the assembly and energy transfer modulation of ***,how linkers function remains unclear due to the... 详细信息

关键词： phycobilisome linkers protein docking crystal structure

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Energy Transfer from phycobilisomes to Photosystems of Nostoc flagelliforme Born. et Flah. During the Rewetting Course and Its Physiological Significance

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Journal of Integrative Plant Biology 2005年第6期47卷 703-708页

作者： HuiHUANG Ke-ZhiBAI Ze-PuZHONG Liang-BiLI Ting-YunKUANG KeyLaboratoryofPhotosynthesisandEnvironmentalMolecularPhysiology InstituteofBotanytheChineseAcademyofSciencesBeijing100093China

: During the non-frost season, the condensation of dew makes Nostoc flagelliforme Born. et Flah., a highly drought-tolerant terrestrial cyanobacterium, frequently undergo rehydration-dehydration. Rehydration begins in the dark at night. After rewetting in the dark, photochemical activity and the structure of photosystem (PS) II were not recovered at all; the structure of PSI, energy transfer in phycobilisomes, and energy transfer from phycobilisomes to PSI were recovered within 5 min, as in the light. The recovery of energy transfer from phycobilisomes to PSII was light dependent and energy transfer from phycobilisomes to PSII was only partially recovered in the dark. These results suggest that the two-trigger control (water and light) of photo synthetic recovery may make N. flagelliforme avoid unnecessary energy consumption and, at the same time, the partial recovery of energy transfer from phycobilisomes to PSII in the dark could help N. flagelliforme accumulate more photosynthetic products during the transient period of rehydration-dehydration.

关键词： dark energy transfer Nostoc flagelliforme photosystem II phycobilisome rewetting

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Fluorescence recovery after photobleaching:analyses of cyanobacterial phycobilisomes reveal intrinsic fluorescence recovery

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Marine Life Science & Technology 2021年第4期3卷 427-433页

作者： Nan Zhang Kang Li Bin-Bin Xie Xiu-Lan Chen Bai-Cheng Zhou Hai-Nan Su Yu-Zhong Zhang State Key Laboratory of Microbial Technology and Marine Biotechnology Research CenterShandong UniversityQingdao 266237China College of Marine Life Sciences Frontiers Science Center for Deep Ocean Multispheres and Earth SystemOcean University of ChinaQingdao 266003China Laboratory for Marine Biology and Biotechnology Pilot National Laboratory for Marine Science and TechnologyQingdao 266237China College of Bioengineering Qilu University of Technology(Shandong Academy of Sciences)Jinan 250353China

Fluorescence recovery after photobleaching(FRAP)has been used to study the dynamics of the cyanobacterial photosynthesis apparatus since *** recovery of cyanobacteria during FRAP was conventionally interpreted as a result of phycobilisome(PBS)diffusion on the surface of the thylakoid *** mechanism of state transition in cyanobacteria has been widely attributed to PBS ***,in red algae,another PBS-containing group,the intrinsic photoprocess was found to contribute greatly to the fluorescence recovery of PBS,which raises questions concerning the role of FRAP in red algal ***,it is important to re-evaluate the nature of PBS fluorescence recovery in *** the present study,four cyanobacterial strains with different phenotypes and PBS compositions were used to investigate their FRAP *** recovery of PBS was observed in wholly photobleached cells in all four cyanobacterial strains,in which the contribution of PBS diffusion to the fluorescence recovery was not ***,the fluorescence recovered in isolated PBSs and PBS-thylakoid membranes after photobleaching further demonstrated the intrinsic photoprocess nature of fluorescence *** findings suggest that the intrinsic photoprocess contributed to the fluorescence recovery following photobleaching when measured by the FRAP method.

关键词： Cyanobacteria Fluorescence recovery after photobleaching Intrinsic photoprocess Mobility phycobilisome

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ISOLATION AND PROTEIN COMPOSITION OF phycobilisomeS FROM RED ALGA Bangia fuscopurpurea

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Chinese Science Bulletin 1992年第6期37卷 503-507页

作者：曾繁杰 Institute of Photographic-Chemistry Academia Sinica Beijing 100101 PRC

The phycobilisomes, composed of chromophoric biliproteins and colorless accessory linker proteins, serve as light-harvesting antennae in blue-green and red algae. Studies have been thoroughly made in many species of blue-green algae and some species of red algae. However, the composition of the accessory undenatured proteins of phycobilisomes has

关键词： Bangia fuscopurpurea Gacilaria tikvahiae phycobilisome composition red algae

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Molecular mechanisms for interaction of glycine betaine with supra-molecular phycobiliprotein complexes

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Science China Chemistry 2009年第11期52卷 1865-1870页

作者： XU XiuLing LI Heng XIE Jie ZHAO JingQuan Beijing National Laboratory for Molecular Sciences(BNLMS) Photochemistry LaboratoryInstitute of ChemistryChinese Academy of SciencesBeijing 100190China

Glycine betaine(GB) is a biologically important small molecule protecting cells,proteins and enzymes in vivo and in vitro under environmental ***,it was found that GB could also relax the structure and inactivate the function of phycobiliproteins and phycobilisome(PBS),a kind of supramolecular complexes,in cyanobacterial *** molecular mechanisms for the opposite phenomena are quite *** PBS and a trimeric or monomeric C-phycocyanin(C-PC) as models,the molecular mechanism for the interaction of GB with supra-molecular complexes or nuclear proteins was *** energetic decoupling of PBS components induced by GB suggests that the PBS core-membrane linking polypeptide was the most sensitive site while the rod-core linker was the *** analysis proves that PBS structure was loosened but not dissociated into the *** the basis of the results and structure knowledge,it was proposed that GB screened the electrostatic attraction of the opposite charges on a linker and a protein leading to a much looser *** was observed that GB induced a spectral blue shift for trimeric C-PC but a red shift for a monomeric C-PC(a nuclear protein),which were ascribed to GB's screening of the electrostatic attraction of a linker to a protein and strengthening of the hydrophobic interaction between C-PC *** trimers and monomers' forming of the same products under high concentration of GB was ascribed to a compromise of the opposite interaction forces.

关键词： glycine betaine phycobiliproteins phycobilisome supra-molecular complex molecular interaction mechanism

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Energy transfer kinetics of phycoerythrocyanin trimer from cyanobacterium Anabaena variabilis (II)

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Science China(Life Sciences) 1998年第2期41卷 133-138页

作者：张景民赵井泉蒋丽金陈建新叶彤张启元 1. Institute of Photographic Chemistry Chinese Academy of Sciences 100101 Beijing China 2. State Key Laboratory for Structural Chemistry of Unstable and Stable Species Ultrafast Spectroscopy Laboratory 100080 Beijing China

The excitation energy transfer processes in trimeric PEC have been studied by using steady state and time resolved fluorescence spectra techniques in detail. The results indicate that the energy transfer processes should take place between α 84 PVB and β 84 or β 155 PCB chromophores with the time constants 34.7 ps and 175-200 ps individually; in contrast with monomeric PEC, from time resolved fluorescence anisotropic spectrum technique, the decay constant of 45 ps which was assigned to the energy transfer time among three β 84 PCB chromophores was observed and the energy levels of β 84 and/or β 155 PCB chromophores were confirmed to turn over in trimeric PEC.

关键词： phycobilisome phycoerythrocyanin deconvolution spectrum time resolved fluorescence energy transfer.

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Excitation energy transfer mechanism in C-phycocyanin hexamer

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Science China Chemistry 1998年第6期41卷 623-632页

作者：张景民郑锡光赵福利汪河洲赵继全赵井泉蒋丽金 1. State Key Laboratory for Ultrafast Laser Spectroscopy Zhongshan University 510275 Guangzhou China 2. Institute of Photographic Chemistry Chinese Academy of Sciences 100101 Beijing China

Excitation energy transfer processes and mechanism in C-PC hexamer have been studied in detail by picosecond time-resolved fluorescencs isotropic and anisotropic spectroscopy methods. The experimental results show that there are two types of principal channels, with large probability or amplitude, for linking two trimers viam?m and s?s energy transfer pathways, the energy-transfer time constants of them are about 20 and 10 ps, respectively. Indeed, there exists the evidence for energy-transfer channels of s?f steps in the same monomer and threef?f steps in the same trimer of the C-PC hexamer unit, with small probability or amplitude, and the time constants of them might be ca. 50 and 45 ps separately. Also, the present results show that the hexamer possesses an optimal structure for energy-transfer and for the first time confirm that the dominant energy-transfer processes except those between 1 m?2f, 2m?3f and 3m?1f and so on, in isolated C-PC hexamer, could be described by F?rster dipole-dipole resonance mechanism.

关键词： C-PC hexamer phycobilisome time-resolved spectroscopic technique energy transfer.

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Energy transfer kinetics of phycoerythrocyanins (PECs) from the cyanobacterium Anabaena variabilis(Ⅰ)

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Science China Chemistry 1997年第3期40卷 286-293页

作者：张景民张建平杨紫萱赵井泉蒋丽金陈建新叶彤张启元 Institute of Photographic Chemistry Chinese Academy of SciencesBeijing 100101China Ultrafast Spectroscopy Chamber State Key Laboratory for Structural Chemistry of Unstable and Stable SpeciesBeijing 100080China

The excitation energy transfer processes in nionomeric phycoerythrocyanins ( PEC)have been studied in detail using steady-state and time-resolved fluorescence spectra techniques as well as the deconvolution fech nique of *** results indicate that the energy transfer processes should take place between α84 PVB md β8 or β155-PCB chromophores,the time constants of energy transfer are 34.7 and 130 ps individually;the component with lifetime of 1.57 ns originates from the fluorescence lifetime of the terminal emitter of β84 and /or β155 PCB chre-mophores; and the component with lifetime of 515 ps might be assigned to the energy transfer between two PCB chro mophores of β subunit.

关键词： phycobilisome phycoerythroeyanin deconvolution spectrum time-resolved fluorescence energy transfer

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Emerging Perspectives on the Mechanisms, Regulation, and Distribution of Light Color Acclimation in Cyanobacteria

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Molecular Plant 2012年第1期5卷 1-13页

作者： Andrian Gutu David M. Kehoe Department of Biology 1001 East Third Street indiana University Bloomington iN 47405 USA Present address： HoWard Hughes Medical Institute/Department Of Molecular and Cellular Biology FAS Center for Systems Biology Harvard UniversityCambridge MA 02138 USA

Chromatic acclimation （CA） provides many cyanobacteria with the ability to tailor the properties of their light-harvesting antennae to the spectral distribution of ambient light. CA was originally discovered as a result of its dramatic cellular phenotype in red and green light. However, discoveries over the past decade have revealed that many pairs of light colors, ranging from blue to infrared, can trigger CA responses. The capacity to undergo CA is widespread geographically, occurs in most habitats around the world, and is found within all major cyanobacterial groups. In addition, many other cellular activities have been found to be under CA control, resulting in distinct physiological and morphological states for cells under different light-color conditions. Several types of CA appear to be the result of convergent evolution, where different strategies are used to achieve the final goal of optimizing light-harvesting antenna composition to maximize photon capture. The regulation of CA has been found to occur primarily at the level of RNA abundance. The CA-regulatory pathways uncovered thus far are two-component systems that use phytochrome-class photoreceptors with sensor-kinase domains to control response regulators that function as transcription factors. However, there is also at least one CA- regulatory pathway that operates at the post-transcriptional level. It is becoming increasingly clear that large numbers of cyanobacterial species have the capacity to acclimate to a wide variety of light colors through the use of a range of different CA processes.

关键词： Chromatic adaptation phycobilisome cyanobacteria light regulation gene regulation signal transduction light harvesting phenotypic plasticity.

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