ZincZinc FingersZinc SulfateZinc CompoundsKineticsBinding SitesZinc AcetateZinc OxideIon ChannelsZinc IsotopesChelating AgentsAmino Acid SequenceMolecular Sequence DataModels, MolecularIonsProtein BindingHydrogen-Ion ConcentrationCrystallography, X-RayMetalsProtein ConformationMetallothioneinCopperCations, DivalentCobaltIon Channel GatingCadmiumCatalysisEthylenediaminesFactor XIIaIon TransportHistidineSubstrate SpecificityModels, ChemicalEdetic AcidIon-Selective ElectrodesDitiocarbThermodynamicsProtein Structure, TertiaryMetalloproteinsCarbonic AnhydrasesMagnesiumEscherichia coliMathematicsNickelHeavy IonsProtein Structure, SecondaryCysteineCatalytic DomainFactor XIISequence Homology, Amino AcidSpectrometry, FluorescenceStructure-Activity RelationshipCationsAeromonas hydrophilaManganeseApoenzymesRecombinant ProteinsMagnetic Resonance SpectroscopyMolecular StructureMengovirusMutagenesis, Site-DirectedCadmium PoisoningTemperatureCalciumSolutionsModels, BiologicalProtonsCircular DichroismTime FactorsSpectrophotometryLigandsOxidation-ReductionPrekallikreinAlcohol DehydrogenaseCadmium ChloridePotentiometryCarboxypeptidases ABase SequenceBacterial ProteinsMutationLeucine-tRNA LigaseCattleSpectrum AnalysisIronBinding, CompetitiveHydrolysisDose-Response Relationship, DrugSequence AlignmentWaterKininogensDimerizationX-Ray DiffractionMembrane PotentialsDNAMetalloendopeptidasesSulfoglycosphingolipidsCrystallizationPhenanthrolinesPotassiumSodium