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Protein phosphorylation and oxidative protein modification promote plant photosystem II disassembly for repair
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Pulse EPR Spectroscopic Characterization of the S 3 State of the Oxygen-Evolving Complex of Photosystem II Isolated from Synechocystis
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Alteration of the O 2 -Producing Mn 4 Ca Cluster in Photosystem II by the Mutation of a Metal Ligand
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Frequency-Domain Spectroscopic Study of the Photosystem I Supercomplexes, Isolated IsiA Monomers, and the Intact IsiA Ring
The PSI 3 -IsiA 18 supercomplex is one of the largest and most complicated assemblies in photosynthesis. The IsiA ring, composed of 18 IsiA monomers (IsiA 18 ) surrounding the PSI trimer (PSI 3 ), forms under iron-deficient condition in cyanobacteria and acts as a peripheral antenna. Based on the supercomplex structure recently determined via cryo-EM imaging, we model various optical spectra of the IsiA monomers and IsiA 18 ring. Comparison of the absorption and emission spectra of the isolated IsiA monomers and the full ring reveals that about 2.7 chlorophylls (Chls) are lost in the isolated IsiA monomers. The best fits for isolated monomers spectra are obtained assuming the absence of Chl 508, Chl 517 and 70% loss of Chl 511. The best model describing all three hexamers and the entire ring suggests that the lowest energy pigments are Chls 511, 514 and 517. Based on the modeling results presented in this work we conclude that there are most likely three entry points for EET from the IsiA6 hexamer to the PSI core monomer, with two of these entry points likely being located next to each other (i.e. nine entry points from IsiA 18 to the PSI 3 trimer). Lastly, we show that excitation energy transfer inside individual monomers is fast (< 2 ps at T = 5 K) and at least 20 times faster than inter-monomer energy transfer.
Bidirectional Energy Flow in the Photosystem II Supercomplex
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On the Role of the Special Pair in Photosystems as a Charge Transfer Rectifier
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A Reversibly Induced CRISPRi System Targeting Photosystem II in the Cyanobacterium Synechocystis sp. PCC 6803
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Electrochemically Driven Photosynthetic Electron Transport in Cyanobacteria Lacking Photosystem II
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Water Networks in Photosystem II Using Crystalline Molecular Dynamics Simulations and Room-Temperature XFEL Serial Crystallography
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The exchange of the fast substrate water in the S 2 state of photosystem II is limited by diffusion of bulk water through channels – implications for the water oxidation mechanism
Access to the oxygen-evolving complex in photosynthesis is restricted by specific barriers in the channels connecting the Mn 4 CaO 5 catalyst with bulk water. Together with other recent data, this finding allows assigning the two substrate waters.
Effects of x-ray free-electron laser pulse intensity on the Mn K β 1,3 x-ray emission spectrum in photosystem II—A case study for metalloprotein crystals and solutions
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An additional water is introduced into the manganese cluster during the formation of the S3 state of Photosystem II
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