title: Comparative analysis of 5.8 S rRNA from Ephedra kokanica Regl. (Gymnospermae) and other plant species.
abstract: 5.8 S rRNA from the gymnosperm Ephedra kokanica Regl. (EMBL Data Library accession No. X15676) has been sequenced. It is 161 nucleotides long and contains three 2'-O-methylated residues--two adenosines and one guanosine. No pseudouridine have been detected. E. kokanica 5.8 S rRNA, as those from other plant species, can form a secondary structure with paired 5'- and 3'-terminal regions. 5.8 S rRNAs of seed plants differ from the moss Mnium reguicum 5.8 S rRNA in that they have longer variable 'GC-rich' hairpins with insertions in the loop region. 5.8 S rRNA of E. kokanica reveals 69 and 82% of homology with that of moss and five angiosperm species, respectively. The posttranscriptional modification pattern of plant 5.8 S rRNAs is not strictly conservative.
authors.affiliation: A.N. Belozersky Laboratory of Molecular Biology and Bioorganic Chemistry, Moscow State University, U.S.S.R.
authors.lastname: Melekhovets YuF
authors.forename: A V
authors.initials: AV
authors.lastname: Troitsky
mesh_terms: D001483:Base Sequence; D008969:Molecular Sequence Data; D009690:Nucleic Acid Conformation; D010802:Phylogeny; D010944:Plants / Q000235:genetics*; D012335:RNA, Ribosomal / Q000235:genetics*; D012340:RNA, Ribosomal, 5.8S / Q000235:genetics* / Q000302:isolation & purification; D012689:Sequence Homology, Nucleic Acid
chemical_list: D012335:RNA, Ribosomal; D012340:RNA, Ribosomal, 5.8S