CatalysisMetalsModels, BiologicalComputer SimulationGene Expression Regulation, DevelopmentalMolecular Sequence DataSignal TransductionKineticsModels, MolecularBiocatalysisBinding SitesCatalytic DomainSubstrate SpecificityCrystallography, X-RayAmino Acid SequenceMutagenesis, Site-DirectedProtein ConformationEscherichia coliModels, ChemicalHydrogen-Ion ConcentrationZincProtein BindingProtein Structure, TertiaryMutationRNA, CatalyticBase SequenceMolecular StructureHistidineHydrolysisManganeseOxidation-ReductionRecombinant ProteinsSequence Homology, Amino AcidStructure-Activity RelationshipCobaltMagnesiumCopperStereoisomerismCations, DivalentHydrogen BondingThermodynamicsSequence AlignmentAmino Acid SubstitutionAntibodies, CatalyticEnzymesProtein Structure, SecondaryEnzyme StabilityBacterial ProteinsNickelMetals, AlkaliIronMolecular ConformationAspartic AcidTemperatureCysteineCloning, MolecularConserved SequenceProtonsIonsNucleic Acid ConformationAdenosine TriphosphateSpectrophotometryTime FactorsOxidoreductasesMagnetic Resonance SpectroscopyMetals, Alkaline EarthWaterLysineElectron Spin Resonance SpectroscopyDimerizationDNAOxygenLigandsProtein Structure, QuaternaryCircular DichroismPalladiumProtein FoldingCrystallizationMetalloproteinsSaccharomyces cerevisiaeProton-Translocating ATPasesEscherichia coli ProteinsSpectrophotometry, UltravioletElectronsDNA PrimersSulfhydryl CompoundsPhosphatesNADPEnzyme ActivationQuantum TheoryHemeChelating AgentsFlavinsArginineCyclizationCoordination ComplexesSpectrometry, FluorescenceAlkenesAmino Acid MotifsCattle