HistidineCatalytic DomainCatalysisModels, MolecularCrystallography, X-RayBinding SitesMolecular Sequence DataAmino Acid SequenceKineticsHistidine DecarboxylaseSequence Homology, Amino AcidSequence AlignmentProtein ConformationMutagenesis, Site-DirectedCloning, MolecularRecombinant ProteinsProtein BindingBase SequenceRecombinant Fusion ProteinsDiethyl PyrocarbonateProtein Structure, TertiaryProtein Structure, SecondaryEscherichia coliStructure-Activity RelationshipMutationHistidine Ammonia-LyaseProtein Interaction Domains and MotifsSubstrate SpecificityBacterial Proteinssrc Homology DomainsConserved SequenceProtein KinasesPhosphorylationDimerizationAmino Acid MotifsDNA, ComplementaryAmino Acid SubstitutionPeptide FragmentsHydrogen-Ion ConcentrationSequence DeletionDNA PrimersMutagenesisTransfectionCellulaseChitinaseHydrolysisProtein FoldingMembrane ProteinsEnzyme ActivationPoint MutationSignal TransductionCell LinePlasmidsCysteineProtein Structure, QuaternaryDNASaccharomyces cerevisiaeDNA-Binding ProteinsElectrophoresis, Polyacrylamide GelLigandsAmino AcidsPeptidesCell MembraneCarrier ProteinsMagnetic Resonance SpectroscopyCrystallizationZincEnzyme StabilityTranscription FactorsEscherichia coli ProteinsNuclear Magnetic Resonance, BiomolecularPDZ DomainsPhylogenyCircular DichroismProtein MultimerizationTwo-Hybrid System TechniquesStructural Homology, ProteinRestriction MappingEndo-1,4-beta XylanasesLysineIsoenzymesBiocatalysisHydrogen BondingModels, BiologicalFungal ProteinsTranscription, GeneticCelluloseSerine EndopeptidasesHeLa CellsTyrosineCattleSequence Homology, Nucleic AcidRNA, MessengerCricetinaeMetalloendopeptidasesSequence Analysis, DNAPolymerase Chain ReactionProtein Tyrosine PhosphatasesEndopeptidasesGlycoside Hydrolases