2024
Mutation-induced shift of the photosystem II active site reveals insight into conserved water channels
Flesher D, Liu J, Wang J, Gisriel C, Yang K, Batista V, Debus R, Brudvig G. Mutation-induced shift of the photosystem II active site reveals insight into conserved water channels. Journal Of Biological Chemistry 2024, 300: 107475. PMID: 38879008, PMCID: PMC11294709, DOI: 10.1016/j.jbc.2024.107475.Peer-Reviewed Original ResearchOxygen-evolving complexPhotosystem II active sitePhotosystem IIJahn-Teller distortionPhotosystem II complexD1-Asp170Jahn-TellerResolution cryo-EM structureMutation-induced structural changesCryo-EM structureMagnetic propertiesD1 subunitActive siteOxygenic photosynthesisMutagenesis studiesLight-driven water oxidationSpectroscopic propertiesStructural basisSpectroscopic dataAmino acidsWater oxidation mechanismPhotosystemMutationsMutation-induced shiftWater oxidationOccupancy Analysis of Water Molecules inside Channels within 25 Å Radius of the Oxygen-Evolving Center of Photosystem II in Molecular Dynamics Simulations
Kaur D, Reiss K, Wang J, Batista V, Brudvig G, Gunner M. Occupancy Analysis of Water Molecules inside Channels within 25 Å Radius of the Oxygen-Evolving Center of Photosystem II in Molecular Dynamics Simulations. The Journal Of Physical Chemistry B 2024, 128: 2236-2248. PMID: 38377592, DOI: 10.1021/acs.jpcb.3c05367.Peer-Reviewed Original ResearchOxygen-evolving centerWater moleculesPhotosystem IIPositions of water moleculesAnalysis of water moleculesCatalyze water oxidationHydrogen bond networkOccupancy of water moleculesMolecular dynamics simulationsD1-D61Electron density mapsMolecular dynamics analysisProton transferWater oxidationCrystallographic dataIce latticeMD simulationsMolecular dynamicsStructural transitionDynamics simulationsSubstrate waterOxygen-evolvingRoom temperatureProtein residuesMolecules
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
2021
High-resolution cryo-electron microscopy structure of photosystem II from the mesophilic cyanobacterium, Synechocystis sp. PCC 6803
Gisriel CJ, Wang J, Liu J, Flesher DA, Reiss KM, Huang HL, Yang KR, Armstrong WH, Gunner MR, Batista VS, Debus RJ, Brudvig GW. High-resolution cryo-electron microscopy structure of photosystem II from the mesophilic cyanobacterium, Synechocystis sp. PCC 6803. Proceedings Of The National Academy Of Sciences Of The United States Of America 2021, 119: e2116765118. PMID: 34937700, PMCID: PMC8740770, DOI: 10.1073/pnas.2116765118.Peer-Reviewed Original ResearchConceptsCryo-electron microscopy structurePCC 6803Photosystem IIWater oxidationMicroscopy structureMesophilic cyanobacteriumHigh-resolution cryo-electron microscopy structuresOxygen-evolving photosystem IILight-driven water oxidationCyanobacterial photosystem IIHigh-resolution structuresD1 subunitPSII structureSynechocystis spLarge water channelsGenetic manipulationC-terminusBiophysical dataActive siteCyanobacteriumSpStructural pictureSubunitsOxidationWater channelsStructure of a monomeric photosystem II core complex from a cyanobacterium acclimated to far-red light reveals the functions of chlorophylls d and f
Gisriel CJ, Shen G, Ho MY, Kurashov V, Flesher DA, Wang J, Armstrong WH, Golbeck JH, Gunner MR, Vinyard DJ, Debus RJ, Brudvig GW, Bryant DA. Structure of a monomeric photosystem II core complex from a cyanobacterium acclimated to far-red light reveals the functions of chlorophylls d and f. Journal Of Biological Chemistry 2021, 298: 101424. PMID: 34801554, PMCID: PMC8689208, DOI: 10.1016/j.jbc.2021.101424.Peer-Reviewed Original ResearchConceptsChl f moleculesWater oxidationF moleculesPhotosystem II core complexII core complexesPhotosystem IIÅ resolution cryo-EM structureFar-red light photoacclimationResolution cryo-EM structurePhotochemical catalysisElectron transfer chainCryo-EM structureGlutamate side chainVisible lightCore complexSide chainsRed limitD moleculesSolar energy utilizationAcceptor sidePSII biogenesisFar-red lightPCC 7335Core subunitsMoleculesHeterogeneous Composition of Oxygen-Evolving Complexes in Crystal Structures of Dark-Adapted Photosystem II
Wang J, Gisriel CJ, Reiss K, Huang HL, Armstrong WH, Brudvig GW, Batista VS. Heterogeneous Composition of Oxygen-Evolving Complexes in Crystal Structures of Dark-Adapted Photosystem II. Biochemistry 2021, 60: 3374-3384. PMID: 34714055, DOI: 10.1021/acs.biochem.1c00611.Peer-Reviewed Original ResearchConceptsOxygen-evolving complexMetal ionsPhotosystem IIElectron density peakIndividual metal ionsElectron density distributionNumber of electronsPSII dimersMetal centerWater oxidationOxidation stateElectron numberHomodimeric protein complexElectronsCrystal structurePSII structureDensity distributionDensity peaksComplexesRedox stateIonsDimersMonomersPeakOxidation