title: The primary and secondary structure of the 5'-end region of encephalomyocarditis virus RNA. A novel approach to sequencing long RNA molecules.
abstract: The primary structure of a 149-nucleotide fragment of encephalomyocarditis (EMC) virus RNA from the 5'-terminus of the genome up to the poly(C) tract (S fragment) has been determined. For isolation of the S fragment, site-directed fragmentation of the viral RNA with RNase H and poly(dG) was employed. For sequencing the S fragment, a novel approach has been developed, which can be used for primary structure determination of long RNA molecules. A model of the secondary structure of the S fragment is proposed, according to which this region of RNA is highly structured. The role of complementary oligonucleotide stretches near both termini of the RNA molecule is discussed.
mesh_terms: D001483:Base Sequence; D004247:DNA / Q000235:genetics; D004686:Encephalomyocarditis virus / Q000235:genetics*; D008958:Models, Molecular; D009690:Nucleic Acid Conformation; D012367:RNA, Viral / Q000235:genetics*
chemical_list: D012367:RNA, Viral; D004247:DNA