Hydrogen BondingModels, MolecularCrystallography, X-RayProtein ConformationBinding SitesWaterHydrogenMolecular ConformationMolecular StructureProtein Structure, SecondaryCatalytic DomainMolecular Sequence DataAmino Acid SequenceProtein BindingModels, ChemicalHydrogen PeroxideMutagenesis, Site-DirectedMagnetic Resonance SpectroscopyStructure-Activity RelationshipProtein Structure, TertiaryKineticsBase PairingHydrogen SulfideBase SequenceComputer SimulationThermodynamicsCatalysisNucleic Acid ConformationProtonsNuclear Magnetic Resonance, BiomolecularDisulfidesSchiff BasesSubstrate SpecificityStatic ElectricitySolventsBase CompositionHydrogen-Ion ConcentrationProtein FoldingX-Ray DiffractionMolecular Dynamics SimulationOxidation-ReductionAmino Acid SubstitutionHistidineMutationDNAEscherichia coliTemperatureStereoisomerismQuantum TheoryLigandsCrystallizationSteroid IsomerasesSolutionsCrystallographyKetosteroidsHydrophobic and Hydrophilic InteractionsPeptidesSkull BaseAsparaginePhotoreceptors, MicrobialSpectrophotometry, InfraredAspartic AcidSpectrum Analysis, RamanCysteineRecombinant ProteinsBacterial ProteinsProteinsDeuterium Exchange MeasurementDimerizationCircular DichroismSpectroscopy, Fourier Transform InfraredHydrogen CyanideHalorhodospira halophilaAmidesComamonas testosteroniSequence Homology, Amino AcidProtein DenaturationAdenineOxygenAmino AcidsCalorimetryMolecular Docking SimulationElectronsDental BondingEnzyme StabilityOligodeoxyribonucleotidesChemistry, PhysicalSequence AlignmentTyrosineDrug DesignBase Pair MismatchPhysicochemical PhenomenaOxidantsRibonuclease, PancreaticIsomerismSpectrophotometry, UltravioletAlanineCattleBiophysicsBiophysical Phenomena