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  • Title: Immunospecific binding of tRNA precursors containing N6-(delta 2-isopentenyl) adenosine.
    Author: Jayabaskaran C.
    Journal: Biochem Int; 1984 Feb; 8(2):257-64. PubMed ID: 6566571.
    Abstract:
    Antibodies specific for N6-(delta 2-isopentenyl) adenosine (i6A) were immobilized on Sepharose and this adsorbent (Sepharose-anti-i6A) was used to selectively isolate bacteriophage T4 tRNA precursors containing i6A/ms2i6A from an unfractionated population of 32P-labeled T4 RNAs. The results showed that antibodies to i6A selectively bound only those tRNA precursors containing i6A/ms2i6A. Binding of tRNA precursors by antibody and specificity of the binding was assessed by membrane binding using 32P-labeled tRNA precursor. Binding was highly specific for i6A/ms2i6A residues in the tRNA precursors. This binding can be used to separate modified from unmodified precursor RNAs and to study the biosynthetic pathways of tRNA precursors.
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