1997
Fluorescence Quenching by Chlorophyll Cations in Photosystem II †
Schweitzer R, Brudvig G. Fluorescence Quenching by Chlorophyll Cations in Photosystem II †. Biochemistry 1997, 36: 11351-11359. PMID: 9298954, DOI: 10.1021/bi9709203.Peer-Reviewed Original ResearchConceptsFluorescence quenchingPhotosystem IIElectron donorDonor sideElectron paramagnetic resonance spectroscopyRedox-active tyrosinesRedox-active centersCharge-separated stateSteady-state fluorescence quenchingParamagnetic resonance spectroscopyRedox-active componentsElectron donor sideElectron transfer pathwayCytochrome b559Redox stateFluorescence intensityO2-evolving complexPrimary electron donorReversible oxidationChlorophyll cationElectron donationFurther oxidationChlZRapid photooxidationDifferent sample preparation
1985
Electron transfer in photosystem II at cryogenic temperatures.
De Paula J, Innes J, Brudvig G. Electron transfer in photosystem II at cryogenic temperatures. Biochemistry 1985, 24: 8114-20. PMID: 3004575, DOI: 10.1021/bi00348a042.Peer-Reviewed Original ResearchConceptsS2-state multiline EPR signalMultiline EPR signalElectron donationEPR signalS1 stateCytochrome b559Electron paramagnetic resonance spectroscopyParamagnetic resonance spectroscopyStable charge separationPhotosystem IIChemical oxidationChlorophyll cationElectron transferReaction center concentrationCharge separationElectron donorResonance spectroscopyS2 stateReaction centersTemperature rangeP680Signal speciesCenter concentrationB559Donation pathway