2022
Glycerol binding at the narrow channel of photosystem II stabilizes the low-spin S2 state of the oxygen-evolving complex
Flesher DA, Liu J, Wiwczar JM, Reiss K, Yang KR, Wang J, Askerka M, Gisriel CJ, Batista VS, Brudvig GW. Glycerol binding at the narrow channel of photosystem II stabilizes the low-spin S2 state of the oxygen-evolving complex. Photosynthesis Research 2022, 152: 167-175. PMID: 35322325, PMCID: PMC9427693, DOI: 10.1007/s11120-022-00911-0.Peer-Reviewed Original ResearchConceptsOxygen-evolving complexHydrogen bond networkS2 stateEPR signalPhotosystem II cyclesX-ray crystal structureRelative stabilityState EPR signalsD1-Asp61Water oxidationCatalytic intermediatesPhotochemical oxidationEPR spectraGlycerol moleculesCrystal structureCyanobacterial PSIIMultiline signalState SiPhotosystem IIOxidationRelative intensitiesComplexesEffect of glycerolExperimental conditionsStability
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