GlucagonAmino AcidsReceptors, GlucagonSequence Homology, Amino AcidAmino Acid SequenceAmino Acid SubstitutionCloning, MolecularGlucagon-Secreting CellsAmino Acids, EssentialInsulinAmino Acid Transport SystemsLiverSequence AlignmentBase SequenceKineticsAmino Acid MotifsEscherichia coliBinding SitesMutationPeptide FragmentsMolecular Sequence DataMutagenesis, Site-DirectedDNA, ComplementaryLeucineGlucoseSequence Homology, Nucleic AcidAmino Acids, AromaticPeptidesAmino Acids, Branched-ChainProtein ConformationRecombinant ProteinsAmino Acids, SulfurAlanineStructure-Activity RelationshipBlood GlucoseSomatostatinModels, MolecularMolecular WeightIslets of LangerhansProtein Structure, TertiaryDNAProtein BindingCell LineSubstrate SpecificityArginineGluconeogenesisProglucagonRNA, MessengerBacterial ProteinsHypoglycemiaRestriction MappingProteinsPancreasRats, Inbred StrainsRecombinant Fusion ProteinsElectrophoresis, Polyacrylamide GelGlucagon-Like PeptidesPhylogenySequence Analysis, DNAGenes, BacterialChromatography, High Pressure LiquidPancreatic HormonesProtein Structure, SecondaryPancreatic PolypeptidePlasmidsSpecies SpecificityAmino Acid Transport Systems, BasicBiological TransportDNA PrimersCattleConserved SequenceIsoleucineCarrier ProteinsAmino Acids, BasicLysineTrypsinGlutamineProtein PrecursorsGlycineGlucagon-Like Peptide 1EpinephrineDogsCodonCell MembraneGenesAspartic AcidTranscription, GeneticCyanogen BromideProtein BiosynthesisNitrogenValineTransfectionAmino Acids, DiaminoOpen Reading FramesPolymerase Chain ReactionCyclic AMPSequence DeletionCells, CulturedPhenylalanineExcitatory Amino Acids