Substrate SpecificityAcetylthiocholineKineticsBinding SitesHydrolysisModels, MolecularCatalytic DomainCatalysisProtein BindingMolecular Sequence DataModels, ChemicalCrystallography, X-RayAmino Acid SequenceProtein ConformationEscherichia coliHydrogen-Ion ConcentrationStructure-Activity RelationshipProtein Structure, TertiaryCell Adhesion MoleculesBase SequenceRecombinant ProteinsCell LineMutationSmall Molecule LibrariesSequence Homology, Amino AcidMolecular StructurePhosphorylationSignal TransductionCells, CulturedMolecular WeightPeptidesMutagenesis, Site-DirectedCloning, MolecularBacterial ProteinsElectrophoresis, Polyacrylamide GelModels, BiologicalOxidation-ReductionDNAMembrane ProteinsCattleSequence AlignmentCell AdhesionEnzyme ActivationRecombinant Fusion ProteinsCell MembranePeptide FragmentsTemperatureAdenosine TriphosphateLigandsCarrier ProteinsNucleic Acid ConformationProteinsAmino AcidsMolecular ConformationChromatography, High Pressure LiquidNeural Cell Adhesion MoleculesProtein Structure, SecondaryOligopeptidesTransfectionStereoisomerismTime FactorsBiological TransportEnzyme InhibitorsRNA, MessengerAntibodies, MonoclonalMagnetic Resonance SpectroscopyEscherichia coli ProteinsDNA PrimersPlasmidsThermodynamicsMacromolecular SubstancesLiverHydrogen BondingIsoenzymesSaccharomyces cerevisiaeIntercellular Adhesion Molecule-1EndopeptidasesChromatography, GelMice, Inbred C57BLProtein FoldingFluorescent DyesWaterAntigens, CDBlotting, WesternAmino Acid MotifsMembrane GlycoproteinsMass SpectrometrySpectrometry, FluorescenceCrystallizationBinding, CompetitiveDimerizationRabbitsHeLa CellsPhosphoproteinsTyrosineEnzyme StabilityProtein Processing, Post-TranslationalDNA, ComplementaryT-LymphocytesRNA