Receptor, trkBReceptors, Invertebrate PeptideBrain-Derived Neurotrophic FactorInvertebratesTyrosinePeptidesProtein Tyrosine PhosphatasesPeptide FragmentsAmino Acid SequenceMolecular Sequence DataTyrosine 3-MonooxygenasePhosphorylationPeptide LibraryAntimicrobial Cationic PeptidesSignal TransductionPeptides, CyclicPeptide MappingPhosphotyrosineProtein BindingVertebratesOligopeptidesBase SequenceCell LineSequence Homology, Amino AcidBinding SitesProtein Tyrosine Phosphatase, Non-Receptor Type 11KineticsIntracellular Signaling Peptides and ProteinsReceptor Protein-Tyrosine KinasesProtein Structure, TertiaryMolluscaEnzyme ActivationModels, MolecularCloning, MolecularCells, CulturedNatriuretic Peptide, BrainProtein Tyrosine Phosphatase, Non-Receptor Type 6MutationProtein ConformationRecombinant ProteinsSequence AlignmentProteinsPhosphoproteinsEchinodermataPhylogenyProtein Tyrosine Phosphatase, Non-Receptor Type 1UrochordataCrustaceaVasoactive Intestinal PeptideStructure-Activity RelationshipAquatic OrganismsChordata, NonvertebrateRecombinant Fusion ProteinsCalcitonin Gene-Related PeptideSubstrate SpecificityPolychaetaCell-Penetrating PeptidesProtein Structure, SecondaryChromatography, High Pressure LiquidAmino AcidsTransfectionEnzyme InhibitorsMembrane Proteins