Cleavage And Polyadenylation Specificity FactormRNA Cleavage and Polyadenylation FactorsPolyadenylationCleavage Stimulation FactorPolynucleotide AdenylyltransferaseRNA 3' End ProcessingRNA PrecursorsRNA Processing, Post-TranscriptionalPoly ARNA-Binding ProteinsMolecular Sequence DataAvulavirus InfectionsNewcastle DiseaseAvulavirusAmino Acid SequenceRNA, MessengerNewcastle disease virusRNA 3' Polyadenylation SignalsInteinsBase SequenceViral Fusion ProteinsSubstrate SpecificityRibulose-Bisphosphate CarboxylaseProteolysis