Results 51 to 60 of about 37,140 (299)

Non-intrusive Assessment of Photosystem II and Photosystem I in Whole Coral Tissues

Frontiers in Marine Science, 2017
Reef building corals (phylum Cnidaria) harbor endosymbiotic dinoflagellate algae (genus Symbiodinium) that generate photosynthetic products to fuel their host's metabolism.
Milán Szabó, Milán Szabó, Anthony W. D. Larkum, David J. Suggett, Imre Vass, László Sass, Barry Osmond, Barry Osmond, Alonso Zavafer, Peter J. Ralph, Wah S. Chow   +10 more
doaj   +1 more source

Cryo-EM and femtosecond spectroscopic studies provide mechanistic insight into the energy transfer in CpcL-phycobilisomes

Nature Communications, 2023
Phycobilisomes (PBS) are the major light harvesting complexes of photosynthesis in the cyanobacteria and red algae. CpcL-PBS is a type of small PBS in cyanobacteria that transfers energy directly to photosystem I without the core structure.
Lvqin Zheng, Zhengdong Zhang, Hongrui Wang, Zhenggao Zheng, Jiayu Wang, Heyuan Liu, Hailong Chen, Chunxia Dong, Guopeng Wang, Yuxiang Weng, Ning Gao, Jindong Zhao   +11 more
doaj   +1 more source

Enzyme‐Like Synthetic Cleft for Light‐Driven Water‐Oxidation Catalysis Via an Oxide Relay Pathway

Angewandte Chemie, EarlyView.
A carboxylic acid group introduced into the second coordination sphere of a Ru(bda) water oxidation catalyst forms a defined hydrogen bond within the catalytic cleft. This interaction locks the group in place and enables an intramolecular oxide relay pathway between Ru(V)═O and the carboxylate group, providing a distinct and efficient route for O─O ...
Daniel A. P. Friedewald, Gourab Das, Philipp H. Kirchner, Olga Anhalt, Deqi Tang, Sandra Luber, Florian Beuerle, Frank Würthner   +7 more
wiley   +2 more sources

Light and Dark Cycles Control the Structural Evolution of Photoresponsive Supramolecular Systems

Angewandte Chemie, EarlyView.
Here, we report a photoswitchable synthetic peptide that, under light energy cycles, exhibits supramolecular polymorphism coupled to darkness‐driven structural self‐selection. We demonstrate that light sustains a transient assembled state in the form of helical nanoribbons, hindering the system from undergoing a transition to the disassembled state ...
Alejandro Méndez‐Ardoy, Nicolas Cissé, Adrian Sanchez‐Fernandez, Patricia Fulias‐Guzmán, Marc C. A. Stuart, Tibor Kudernac, Javier Montenegro   +6 more
wiley   +2 more sources

Structure Insights Into Photosystem I Octamer From Cyanobacteria

Frontiers in Microbiology, 2022
The diversity of photosystem oligomers is essential to understanding how photosynthetic organisms adapt to light conditions. Due to its structural and physiological significance, the assembly of the PSI supercomplex has been of great interest recently in
Ming Chen, Yujie He, Dongyang Liu, Lijin Tian, Pengqi Xu, Xuan Liu, Yihang Pan, Shuqi Dong, Shuqi Dong, Jun He, Jun He, Ying Zhang   +11 more
doaj   +1 more source

Excitation Energy Transfer and Trapping in Higher Plant Photosystem II Complexes with Different Antenna Sizes [PDF]

, 2011
700 cm(-1)) and a slow relaxation of the radical pair to an irreversible state (similar to 150 ps). Somewhat unexpectedly, we had to reduce the energy-transfer and charge-separation rates in complexes with decreasing size to obtain optimal fits.
van Amerongen, H., Koen Broess, Roberta Croce, Amerongen, H., van, Croce, R., Broess, Koen, Stefano Caffarri, Croce, R.; id_orcid, Croce, Roberta, Herbert van Amerongen, Amerongen, H. van, Caffarri, Stefano, van Amerongen, Herbert, Broess, K., Caffarri, S.   +14 more
core   +1 more source

Role of Plastid Protein Phosphatase TAP38 in LHCII Dephosphorylation and Thylakoid Electron Flow [PDF]

, 2010
Short-term changes in illumination elicit alterations in thylakoid protein phosphorylation and reorganization of the photosynthetic machinery. Phosphorylation of LHCII, the light-harvesting complex of photosystem II, facilitates its relocation to ...
Leister D., Pesaresi, Paolo, Alexander Hertle, Mathias Pribil, M. Pribil, Leister Dario, Barbato, Roberto, P. Pesaresi, Hertle, Alexander, Leister, Dario, Pesaresi Paolo, R. Barbato, Hertle Alexander, Barbato Roberto, Er Hertle, D. Leister, Pribil M, Roberto Barbato, Dario Leister, Paolo Pesaresi, A. Hertle, Pesaresi P, Pribil, Mathias, Hertle A, Pribil Mathias   +24 more
core   +1 more source

Reconstructing the origin of oxygenic photosynthesis: do assembly and photoactivation recapitulate evolution?

Frontiers in Plant Science, 2016
Due to the great abundance of genomes and protein structures that today span a broad diversity of organisms, now more than ever before, it is possible to reconstruct the molecular evolution of protein complexes at an incredible level of detail.
Tanai eCardona
doaj   +1 more source

Chlorophyll Proteins of Photosystem I [PDF]

Plant Physiology, 1980
Data are presented which suggest the existence of a light-harvesting pigment-protein complex which is functionally and structurally associated with photosystem I (PSI) reaction centers. These observations are based on techniques which allow isolation of PSI using minimal concentrations of Triton X-100. Properties of density and self aggregation allowed
J E, Mullet, J J, Burke, C J, Arntzen
openaire   +2 more sources

Blue light is more essential than red light for maintaining the activities of photosystem II and I and photosynthetic electron transport capacity in cucumber leaves

Journal of Integrative Agriculture, 2016
Blue and red lights differently regulate leaf photosynthesis. Previous studies indicated that plants under blue light generally exhibit better photosynthetic characteristics than those under red light.
Yan-xiu MIAO, Xiao-zhuo WANG, Li-hong GAO, Qing-yun CHEN, Mei QU   +4 more
doaj   +1 more source