1995
High-valent oxomanganese clusters: structural and mechanistic work relevant to the oxygen-evolving center in photosystem II
Manchanda R, Brudvig G, Crabtree R. High-valent oxomanganese clusters: structural and mechanistic work relevant to the oxygen-evolving center in photosystem II. Coordination Chemistry Reviews 1995, 144: 1-38. DOI: 10.1016/0010-8545(95)01147-h.Peer-Reviewed Original ResearchO2-evolving centerActive siteOxygen-evolving centerPhotosystem IIOxomanganese clusterBioinorganic chemistryInorganic chemistsWater oxidationComplex chemistryMechanistic aspectsBiophysical studiesChemistryMagnetic propertiesNative enzymeMechanistic workPS IINuclearityChemistsMetalloproteinsSuch clustersConsiderable interestOxidationRecent effortsChemicalsTetramer
1990
Electron Spin-Lattice Relaxation of the Stable Tyrosine Radical D+ in Photosystem II
Beck W, Innes J, Brudvig G. Electron Spin-Lattice Relaxation of the Stable Tyrosine Radical D+ in Photosystem II. 1990, 817-820. DOI: 10.1007/978-94-009-0511-5_188.Peer-Reviewed Original ResearchMn complexesO2-evolving centerDark stable S1 statePhotosystem IIPhotosynthetic H2O oxidationElectron paramagnetic resonance spectraRedox-active sitesWeak dipolar couplingsParamagnetic resonance spectraH2O oxidationOxidation stateTyrosine radicalsDipolar couplingsResonance spectraS0 stateS1 stateTyr-160D2 polypeptidesRelaxation propertiesSpin-lattice relaxation rateMagnetic propertiesElectron spin-lattice relaxation rateSpin-lattice relaxationComplexesRelaxation rate
1989
Oxidation of exogenous substrates by the O2-evolving center of photosystem II and related catalytic air oxidation of secondary alcohols via a tetranuclear manganese(IV) complex.
Beck W, Sears J, Brudvig G, Kulawiec R, Crabtree* R. Oxidation of exogenous substrates by the O2-evolving center of photosystem II and related catalytic air oxidation of secondary alcohols via a tetranuclear manganese(IV) complex. Tetrahedron 1989, 45: 4903-4911. DOI: 10.1016/s0040-4020(01)85159-0.Peer-Reviewed Original ResearchMn complexesH2O oxidationOxidation stateAir oxidationStrong oxidantsSecondary alcoholsPhotosynthetic H2O oxidationPhotosystem IIS1 stateLower oxidation statesCatalytic air oxidationLight-driven generationO2 evolution activityOxidation chemistryO2-evolving centerCatalytic cycleOxidizing statePrimary aminesSecondary aminesReductive mechanismOxidationComplexesExogenous ligandsCenter actsOxidants
1987
Reactions of hydroxylamine with the electron-donor side of photosystem II.
Beck W, Brudvig G. Reactions of hydroxylamine with the electron-donor side of photosystem II. Biochemistry 1987, 26: 8285-95. PMID: 2831941, DOI: 10.1021/bi00399a040.Peer-Reviewed Original ResearchConceptsReaction of hydroxylamineMn complexesElectron donor sideO2-evolving centerCharge separationPSII membranesLow-temperature electron paramagnetic resonance (EPR) spectroscopyPhotosystem IIElectron paramagnetic resonance spectroscopyS2-state multiline EPR signalS1 stateTwo-electron reductionOne-electron photooxidationParamagnetic resonance spectroscopyN-methyl-substituted analoguesRadical oxidation productsO2 evolution activityMultiline EPR signalOxidation stateThylakoid membrane preparationsOxidation productsEvolution activityProlonged dark incubationEPR signalResonance spectroscopy
1986
Binding of amines to the O2-evolving center of photosystem II.
Beck W, Brudvig G. Binding of amines to the O2-evolving center of photosystem II. Biochemistry 1986, 25: 6479-86. PMID: 3024709, DOI: 10.1021/bi00369a021.Peer-Reviewed Original ResearchConceptsO2-evolving centerMultiline EPR spectrumMultiline EPR signalEPR signalS2 statePSII membranesLow-temperature electron paramagnetic resonance (EPR) spectroscopyEPR spectraElectron paramagnetic resonance spectroscopyS2-state multiline EPR signalPhotosystem IIBinding of NH3Untreated PSII membranesDirect spectroscopic evidenceParamagnetic resonance spectroscopySpinach PSII membranesMn sitesBinding of aminesDifferent EPR signalsNH3 moleculesSpectroscopic evidencePrimary aminesSteric factorsParamagnetic sitesResonance spectroscopyEffect of the 17- and 23-kilodalton polypeptides, calcium, and chloride on electron transfer in photosystem II.
De Paula J, Li P, Miller A, Wu B, Brudvig G. Effect of the 17- and 23-kilodalton polypeptides, calcium, and chloride on electron transfer in photosystem II. Biochemistry 1986, 25: 6487-94. PMID: 3024710, DOI: 10.1021/bi00369a022.Peer-Reviewed Original ResearchConceptsS2-state multiline EPR signalMultiline EPR signalEPR signalPSII membranesPhotosystem II samplesS1 stateUntreated PSII membranesReaction centersElectron paramagnetic resonance measurementsChlorophyll moleculesPhotosystem II membranesStable charge separationParamagnetic resonance measurementsPhotosystem IIPSII samplesO2-evolving centerElectron transferCharge separationElectron donorNuclear hyperfine structureCytochrome b559Mn sitesResonance measurementsOxidationFraction of PSII