title: The 3' end termini of the Tacaribe arenavirus subgenomic RNAs.
abstract: Tacaribe virus (TV), a member of the Arenaviridae family, contains two single-stranded RNA genome segments called S and L. Two proteins, in an ambisense coding strategy, are encoded in both the S RNA and the L RNA. The 3' ends of the TV four putative mRNAs have been characterized using S1 nuclease mapping. The experiments revealed that the transcripts terminate within the intergenic region in each RNA segment. No special sequences that might function as termination signals were evident. The 3' end sequences of the four putative mRNAs can be predicted to adopt GC-rich stable hairpin configurations (delta G greater than or equal to -25 kcal). These observations suggest that the transcript structure rather than particular sequences might be the signal involved in the termination of arenavirus transcription.
authors.affiliation: Centro de Virología Animal, Capital Federal, Argentina.
authors.forename: S
authors.initials: S
authors.lastname: Iapalucci
authors.forename: N
authors.initials: N
authors.lastname: López
authors.forename: M T
authors.initials: MT
authors.lastname: Franze-Fernández
mesh_terms: D001116:Arenaviridae / Q000235:genetics* / Q000648:ultrastructure; D001483:Base Sequence; D006860:Hydrogen Bonding; D008969:Molecular Sequence Data; D015394:Molecular Structure; D012333:RNA, Messenger / Q000235:genetics; D012367:RNA, Viral / Q000235:genetics* / Q000648:ultrastructure; D014158:Transcription, Genetic
chemical_list: D012333:RNA, Messenger; D012367:RNA, Viral