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Title: Structure of nuclear pre-mRNA. VIII. Isolation and characterization of complementary sequences. Author: Ryskov AP, Enikolopov GN, Limborskaya SA. Journal: Mol Biol (Mosk); 1976; 10(4):748-55. PubMed ID: 1023053. Abstract: After the annealing of pre-mRNA at high Cot values, up to 20% of the material becomes resistant to the action of ribonuclease. This has been attributed to the presence of self-complementary sequences (scRNA) in the pre-mRNA. The most important properties of scRNA, which was isolated in preparative amounts, have been studied. The approximate dimensions of the complementary segments are 45-50 nucleotides. Hybridization experiments have shown that scRNA is transcribed from repeated segments of the genome. It may be postulated that the rapidly hybridizing pre-mRNA fraction consists mainly of self-complementary sequences.[Abstract] [Full Text] [Related] [New Search]