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Updated: Jun 28, 2026

A Novel Saturation Mutagenesis Approach: Single Step Characterization of Regulatory Protein Binding Sites in RNA Using Phosphorothioates
Published on: August 21, 2018
Characterization of RNA-protein interactions by phosphorothioate footprinting and its applications to the ribosome
A Ozlem Tastan Bishop1, Ulrich Stelzl, Markus Pech
1Department of Biochemistry, University of Pretoria, Pretoria, South Africa.
Abstract:
Analogs of naturally occurring substances obtained by chemical modifications are powerful tools to study intra- and intermolecular interactions. We have used the phosphorothioate technique to analyze RNA-protein interactions, here the interactions of transfer RNAs (tRNAs) with the three ribosomal binding sites. We describe preparation and purification of thioated tRNAs, formation of functional complexes of programmed ribosomes with tRNAs, and the evaluation of the observed phosphorothioate footprints on the tRNAs.

