Spectroscopy, Fourier Transform InfraredMagnetic Resonance SpectroscopySpectrophotometry, InfraredProtein Structure, SecondaryWaterPhotochemistryProtonsProtein ConformationCalorimetry, Differential ScanningModels, MolecularRhodobacter sphaeroidesDimyristoylphosphatidylcholineCircular DichroismTemperatureHydrogen BondingSpectroscopy, Near-InfraredPhotosynthetic Reaction Center Complex ProteinsModels, ChemicalLightLipid BilayersHydrogen-Ion ConcentrationMolecular StructureLiposomesElectron Spin Resonance SpectroscopySpectrum Analysis, RamanSpectrum AnalysisKineticsBinding SitesProtein BindingNuclear Magnetic Resonance, BiomolecularSpectrometry, FluorescencePhotoelectron SpectroscopyThermogravimetryX-Ray Absorption SpectroscopyCreatineSpectrophotometry, UltravioletSpectroscopy, MossbauerAspartic AcidSolutionsCholineSpectrometry, X-Ray EmissionMolecular ConformationSpectrophotometryThermodynamicsMolecular Sequence DataOxidation-ReductionX-Ray DiffractionSurface PropertiesAmino Acid SequenceMicroscopy, Atomic ForcePhosphocreatineFourier AnalysisDeuterium OxideBacteriorhodopsinsProtein FoldingHydrogenBiophysicsDeuteriumProtein Structure, TertiaryHemeOxygenChitosanProtein DenaturationMass SpectrometryMicellesOxyhemoglobinsVibrationMicroscopy, Electron, ScanningMyoglobinBiophysical PhenomenaPhase TransitionParticle SizeElectronsSynchrotrons