title: The nucleotide sequence of a rat 18 S ribosomal ribonucleic acid gene and a proposal for the secondary structure of 18 S ribosomal ribonucleic acid.
abstract: The nucleotide sequence of a rat 18 S rRNA gene was determined. The 18 S rRNA encoded in the gene contains 1874 nucleotides, and the molecular weight estimated from the sequence is 6.09 X 10(5). The sequences of rat and Xenopus laevis 18 S rRNAs are very similar; the only differences of consequence are the insertions between nucleotides 197 and 206 and between 258 and 279 of the rat nucleic acid of sequences rich in guanine and cytosine. A proposal is presented for the secondary structure of rat 18 S rRNA based on a comparison with the sequences of 17 other small ribosomal subunit RNAs. While the primary sequences of rat and eubacterial RNAs are different, the deduced secondary structures are remarkably similar.
mesh_terms: D000818:Animals; D001483:Base Sequence; D003001:Cloning, Molecular; D004247:DNA / Q000032:analysis; D004262:DNA Restriction Enzymes / Q000378:metabolism; D004275:DNA, Ribosomal; D009690:Nucleic Acid Conformation; D012335:RNA, Ribosomal / Q000235:genetics*; D051381:Rats
chemical_list: D004275:DNA, Ribosomal; D012335:RNA, Ribosomal; D004247:DNA; D004262:DNA Restriction Enzymes