Single-stranded DNA binding of the cold-shock protein CspB from Bacillus subtilis: NMR mapping and mutational characterization.

Abstract

Cold-shock proteins (CSPs) bind to single-stranded nucleic acids, thereby acting as a "RNA chaperone." To gain deeper insights into the rather unspecific nature of ssDNA/RNA binding, we characterized the binding interface of CspB from Bacillus subtilis to a 25-mer of ssDNA (Y-Box25) using heteronuclear 2D NMR spectroscopy. Seventeen residues, including… (More)

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