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. 1982 May 11;10(9):2839-49.
doi: 10.1093/nar/10.9.2839.

Identification of a site of psoralen crosslinking in E. coli 16S ribosomal RNA

S Turner, J F Thompson, J E Hearst, H F Noller

Identification of a site of psoralen crosslinking in E. coli 16S ribosomal RNA

S Turner et al. Nucleic Acids Res. .

Abstract

We have developed a 2-dimensional gel method for identification of RNA sequences crosslinked by the intercalative drug 4'-hydroxymethyl-4,5',8-trimethylpsoralen (HMT). This method is being used to localize such sites in E. coli ribosomal RNA. We report here the identification of a site for HMT crosslinking within positions 434 and 497 of 16S rRNA. We suggest a likely site for HMT intercalation, in which residues U548 and U473 become crosslinked via the drug.

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