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  • Title: Chemical reactivity of E. coli 5S RNA in situ in the 50S ribosomal subunit.
    Author: Silberklang M, RajBhandary UL, Lück A, Erdmann VA.
    Journal: Nucleic Acids Res; 1983 Feb 11; 11(3):605-17. PubMed ID: 6340064.
    Abstract:
    E. coli 50S ribosomal subunits were reacted with monoperphthalic acid under conditions in which non-base paired adenines are modified to their 1-N-oxides. 5S RNA was isolated from such chemically reacted subunits and the two modified adenines were identified as A73 and A99. The modified 5S RNA, when used in reconstitution of 50S subunits, yielded particles with reduced biological activity (50%). The results are discussed with respect to a recently proposed three-dimensional structure for 5S RNA, the interaction of the RNA with proteins E-L5, E-L18 and E-L25 and previously proposed interactions of 5S RNA with tRNA, 16S and 23S ribosomal RNAs.
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