Agouti Signaling ProteinHair ColorReceptors, MelanocortinReceptors, CorticotropinPigmentationAgouti-Related ProteinIntercellular Signaling Peptides and ProteinsReceptor, Melanocortin, Type 1alpha-MSHSequence Homology, Amino AcidProtein Interaction Domains and Motifssrc Homology DomainsRecombinant Fusion ProteinsSequence AlignmentProtein ConformationRecombinant ProteinsMelaninsBinding SitesProtein BindingCloning, MolecularProtein Structure, SecondaryBase SequenceProteinsGenes, Intracisternal A-ParticleMutagenesis, Site-DirectedPDZ DomainsMelanocyte-Stimulating HormonesCrystallography, X-RaySequence DeletionRats, Inbred LECMutationAmino Acid MotifsPhenotypeStructure-Activity RelationshipSkin PigmentationRodentiaDimerization