2024
An analysis of the structural changes of the oxygen evolving complex of Photosystem II in the S1 and S3 states revealed by serial femtosecond crystallography
Yehia S, Wang J, Brudvig G, Gunner M, Brooks B, Amin M. An analysis of the structural changes of the oxygen evolving complex of Photosystem II in the S1 and S3 states revealed by serial femtosecond crystallography. Biochimica Et Biophysica Acta (BBA) - Bioenergetics 2024, 1866: 149531. PMID: 39694218, DOI: 10.1016/j.bbabio.2024.149531.Peer-Reviewed Original ResearchX-ray crystallographyMn coordinationReaction mechanismEfficient solar energy conversionFemtosecond X-ray crystallographyWater splitting reactionX-raySolar energy conversionElectronic structure changesCoordination chemistrySplitting reactionOxygen-evolving complexArtificial catalystsReaction intermediatesPhotosystem IICatalytic intermediatesWater moleculesOxidation stateFemtosecond crystallographyUltra-short laser pulsesOxidation intermediatesCrystallographyS3 stateStructural changesNatural catalysts
2019
Thermodynamics of the S 2 -to-S 3 state transition of the oxygen-evolving complex of photosystem II
Amin M, Kaur D, Yang KR, Wang J, Mohamed Z, Brudvig GW, Gunner MR, Batista V. Thermodynamics of the S 2 -to-S 3 state transition of the oxygen-evolving complex of photosystem II. Physical Chemistry Chemical Physics 2019, 21: 20840-20848. PMID: 31517382, DOI: 10.1039/c9cp02308a.Peer-Reviewed Original ResearchConceptsOxygen-evolving complexD1-E189Water/hydroxide moleculeOxygen evolution reactionWater/hydroxidePhotosystem IIVan der WaalsRedox isomersAdditional hydroxideHydroxide moleculeCatalytic intermediatesElectrostatic interactionsProton lossCoordination shellDer WaalsSerial femtosecond crystallographyHydroxide additionHydroxideConformational changesFree electron laser measurementXFEL structureAdditional oxygenMn4IntermediatesFemtosecond crystallography