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  • Title: Capped poly(A) leaders of variable lengths at the 5' ends of vaccinia virus late mRNAs.
    Author: Ahn BY, Moss B.
    Journal: J Virol; 1989 Jan; 63(1):226-32. PubMed ID: 2462059.
    Abstract:
    Evidence for capped poly(A) leaders of variable lengths located immediately upstream of the translation initiation codon was obtained by direct analyses of a major late mRNA species. A decapping-recapping method was used to specifically substitute a radioactively labeled phosphate for an unlabeled one within the cap structure. RNase H-susceptible sites were made by hybridizing synthetic oligodeoxyribonucleotides to the mRNA encoding a late major structural protein of 11 kilodaltons. Sequences of the type m7G(5')pppAmp (Ap)nUpG. . ., where n varies from a few to more than 40 nucleotides, were deduced by analysis of the length and sequence of RNase H, RNase T1, and RNase U2 digestion products.
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