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 channelsHeterogeneous 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
2016
Heterogenized Iridium Water-Oxidation Catalyst from a Silatrane Precursor
Materna K, Rudshteyn B, Brennan B, Kane M, Bloomfield A, Huang D, Shopov D, Batista V, Crabtree R, Brudvig G. Heterogenized Iridium Water-Oxidation Catalyst from a Silatrane Precursor. ACS Catalysis 2016, 6: 5371-5377. DOI: 10.1021/acscatal.6b01101.Peer-Reviewed Original ResearchIridium Water Oxidation CatalystsMetal oxide semiconductor surfacesWater oxidation catalystsExperimental IR spectraOxide semiconductor surfaceWater oxidationHeterogenized catalystTurnover frequencyIR spectraSilatrane precursorCovalent attachmentFunctional groupsTurnover numberM KNO3CatalystSemiconductor surfacesPrecatalystOverpotentialCatalysisComputational modelingOxidationPrecursorsKNO3SpectraSurface
2015
Computational Insights on Crystal Structures of the Oxygen-Evolving Complex of Photosystem II with Either Ca2+ or Ca2+ Substituted by Sr2+
Vogt L, Ertem MZ, Pal R, Brudvig GW, Batista VS. Computational Insights on Crystal Structures of the Oxygen-Evolving Complex of Photosystem II with Either Ca2+ or Ca2+ Substituted by Sr2+. Biochemistry 2015, 54: 820-825. PMID: 25555204, DOI: 10.1021/bi5011706.Peer-Reviewed Original ResearchConceptsX-ray crystal structureCrystal structureQuantum mechanics/molecular mechanics calculationsQM/MM modelOxygen-Evolving ComplexMolecular mechanics calculationsPhotosystem IIWater oxidationMechanics calculationsComputational insightsReduced statesHeterocationsMM modelSubstitution resultsComplexesS statesStructureCationsBondsOxidationSr2Experimental dataW5WaterCalculations
2014
Photoelectrochemical oxidation of a turn-on fluorescent probe mediated by a surface MnII catalyst covalently attached to TiO2 nanoparticles
Durrell A, Li G, Koepf M, Young K, Negre C, Allen L, McNamara W, Song H, Batista V, Crabtree R, Brudvig G. Photoelectrochemical oxidation of a turn-on fluorescent probe mediated by a surface MnII catalyst covalently attached to TiO2 nanoparticles. Journal Of Catalysis 2014, 310: 37-44. DOI: 10.1016/j.jcat.2013.07.001.Peer-Reviewed Original ResearchVisible light illuminationTwo-proton oxidationHigh fluorescence quantum yieldFluorescence quantum yieldMultielectron chemistryOrganic linkersSustained photocurrentManganese complexesEffective photoanodeTiO2 electrodeNew photoanodesPhotoelectrochemical oxidationFluorescent behaviorTwo-electronBare TiO2TiO2 nanoparticlesFluorescent probeFluorescent compoundsQuantum yieldNanomolar sensitivityOxidationPhotoanodeExcellent substrateSubstrate oxidationReal-time monitoring
2013
A Self‐Improved Water‐Oxidation Catalyst: Is One Site Really Enough?
López I, Ertem M, Maji S, Benet‐Buchholz J, Keidel A, Kuhlmann U, Hildebrandt P, Cramer C, Batista V, Llobet A. A Self‐Improved Water‐Oxidation Catalyst: Is One Site Really Enough? Angewandte Chemie International Edition 2013, 53: 205-209. PMID: 24259487, DOI: 10.1002/anie.201307509.Peer-Reviewed Original ResearchWater oxidation catalystsRobust water oxidation catalystsTransition metal complexesLarge turnover frequencyDFT computational analysisInterconnected catalytic cyclesMononuclear catalystsHomogeneous catalysisWater oxidationRobust catalystsTurnover frequencyEnergy conversion schemeCatalytic processCatalytic cycleMononuclear systemsCatalystDinuclear systemCatalysisComputational analysisOxidationSpectacular developmentHereinComplexesA Self‐Improved Water‐Oxidation Catalyst: Is One Site Really Enough?
López I, Ertem M, Maji S, Benet‐Buchholz J, Keidel A, Kuhlmann U, Hildebrandt P, Cramer C, Batista V, Llobet A. A Self‐Improved Water‐Oxidation Catalyst: Is One Site Really Enough? Angewandte Chemie 2013, 126: 209-213. DOI: 10.1002/ange.201307509.Peer-Reviewed Original ResearchWater oxidation catalystsRobust water oxidation catalystsTransition metal complexesLarge turnover frequencyDFT computational analysisInterconnected catalytic cyclesMononuclear catalystsHomogeneous catalysisWater oxidationRobust catalystsTurnover frequencyEnergy conversion schemeCatalytic processCatalytic cycleMononuclear systemsCatalystDinuclear systemCatalysisComputational analysisOxidationSpectacular developmentHereinComplexes
2012
Tuning redox potentials of bis(imino)pyridine cobalt complexes: an experimental and theoretical study involving solvent and ligand effects
Araujo CM, Doherty MD, Konezny SJ, Luca OR, Usyatinsky A, Grade H, Lobkovsky E, Soloveichik GL, Crabtree RH, Batista VS. Tuning redox potentials of bis(imino)pyridine cobalt complexes: an experimental and theoretical study involving solvent and ligand effects. Dalton Transactions 2012, 41: 3562-3573. PMID: 22318461, DOI: 10.1039/c2dt12195f.Peer-Reviewed Original ResearchDFT/B3LYP calculationsCyclic voltammetry measurementsNonpolar organic solventsStrong polar solventsN-aryl substituentsElectrochemical propertiesRedox propertiesVoltammetry measurementsCobalt complexesOxidation potentialSolvent moietyLigand effectsPolar solventsOrganic solventsSolvent polarityRedox potentialB3LYP calculationsDisproportionation productsElectronic propertiesSolventSubstituentsTheoretical studyComplexesOnly oxidationOxidation
2010
Study of Proton Coupled Electron Transfer in a Biomimetic Dimanganese Water Oxidation Catalyst with Terminal Water Ligands
Wang T, Brudvig GW, Batista VS. Study of Proton Coupled Electron Transfer in a Biomimetic Dimanganese Water Oxidation Catalyst with Terminal Water Ligands. Journal Of Chemical Theory And Computation 2010, 6: 2395-2401. PMID: 20827389, PMCID: PMC2935188, DOI: 10.1021/ct1002658.Peer-Reviewed Original ResearchTerminal water ligandsWater ligandsOxomanganese complexesElectron transferRedox potentialProton Coupled Electron TransferWater oxidation catalystsCyclic voltammogram measurementsLewis base moietyOxidation of waterFree energy calculationsInorganic coreOxidation potentialOxidation statePrimary oxidantOxidation catalystMn centersBase moietyEnergy calculationsBiomimetic modelLigandsAnalogous conversionOxidationFree energyPhotosystem II
2002
Proton-Transfer Dynamics in the Activation of Cytochrome P450eryF
Guallar V, Harris D, Batista V, Miller W. Proton-Transfer Dynamics in the Activation of Cytochrome P450eryF. Journal Of The American Chemical Society 2002, 124: 1430-1437. PMID: 11841312, DOI: 10.1021/ja016474v.Peer-Reviewed Original ResearchConceptsProton transfer eventsProton transfer dynamicsCytochrome P450eryFQuantum chemistry calculationsHydrogen bond networkMechanism of oxidationUltrafast proton transferMolecular dynamics simulationsProton transfer energy profileChemistry calculationsDistal oxygenOxyferrous stateBond networkProton transferEnergy profilesDynamics simulationsHeme groupEnzymatic efficacyP450eryFEnzymatic activationOxidationOxygen speciesReactionOxygenCytochrome P450