Hydrogen BondingCatalysisHydrogenModels, MolecularHydrogen PeroxideCrystallography, X-RayHydrogen SulfideProtein ConformationBinding SitesKineticsMolecular StructureMolecular Sequence DataModels, ChemicalAmino Acid SequenceProtein Structure, SecondaryWaterCatalytic DomainThermodynamicsMolecular ConformationMutagenesis, Site-DirectedSubstrate SpecificityMagnetic Resonance SpectroscopyProtein BindingStructure-Activity RelationshipProtein Structure, TertiaryProtonsBiocatalysisHydrogen-Ion ConcentrationOxidation-ReductionHistidineNuclear Magnetic Resonance, BiomolecularEscherichia coliAmino Acid SubstitutionDisulfidesStatic ElectricityStereoisomerismSolventsProtein FoldingNucleic Acid ConformationMolecular Dynamics SimulationMutationX-Ray DiffractionBase PairingComputer SimulationTemperatureCrystallizationQuantum TheoryLigandsRecombinant ProteinsAspartic AcidSteroid IsomerasesCrystallographyBase SequenceCysteineAsparagineSequence Homology, Amino AcidHydrophobic and Hydrophilic InteractionsSolutionsKetosteroidsBacterial ProteinsPeptidesEnzyme StabilityDimerizationHydrolysisCircular DichroismPhotoreceptors, MicrobialSpectrum Analysis, RamanDNASpectrophotometry, InfraredOxygenComamonas testosteroniSequence AlignmentProteinsElectronsDeuterium Exchange MeasurementProtein DenaturationAmidesAmino AcidsSpectroscopy, Fourier Transform InfraredEnzymesCalorimetryHydrogen CyanideTyrosineAlanineHalorhodospira halophilaIsomerismArginineMolecular Docking SimulationSpectrophotometry, UltravioletRNA, CatalyticConserved SequenceElectron Spin Resonance SpectroscopyHemeProtein Structure, QuaternaryRibonuclease, PancreaticSerineSpectrophotometryIonsCattleChemistry, Physical