Peptide Termination FactorsPeptide Chain Termination, TranslationalCodon, TerminatorEscherichia coliTryptophan-tRNA LigaseAmino Acid SequenceMolecular Sequence DataBase SequenceProtein BiosynthesisRibosomesCloning, MolecularMolecular WeightPeptidesRNA, MessengerElectrophoresis, Polyacrylamide GelKineticsProtein ConformationMacromolecular SubstancesAmino AcidsPeptide FragmentsPeptide BiosynthesisPancreatic Polypeptide