Reference: Garcia A, et al. (1990) New photoactivatable structural and affinity probes of RNAs: specific features and applications for mapping of spermine binding sites in yeast tRNA(Asp) and interaction of this tRNA with yeast aspartyl-tRNA synthetase. Nucleic Acids Res 18(1):89-95

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Abstract


Aryldiazonium salts are shown to be useful as phototriggered structural probes for RNA mapping as well as for footprinting of RNA/protein interaction. In particular the yeast tRNA(Asp)/aspartyl-tRNA synthetase complex is shown to involve the variable loop face and the concave side of the L-shaped nucleic acid bound to a lipophilic area of the enzyme. When chemically linked to spermine, the photoactive group cleaves RNA at polyamine binding sites; 3-4 spermines have been located in the tRNA(Asp), stabilizing the central part of the molecule in regions where two ribose-phosphate strands are close to each other.

Reference Type
Journal Article | Research Support, Non-U.S. Gov't
Authors
Garcia A, Giegé R, Behr JP
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