Bistable secondary structures of small RNAs and their structural probing by comparative imino proton NMR spectroscopy.

@article{Hbartner2003BistableSS,
  title={Bistable secondary structures of small RNAs and their structural probing by comparative imino proton NMR spectroscopy.},
  author={Claudia H{\"o}bartner and Ronald Micura},
  journal={Journal of molecular biology},
  year={2003},
  volume={325 3},
  pages={
          421-31
        }
}
We investigate 25-34 nucleotide RNA sequences, that have been rationally designed to adopt two different secondary structures that are in thermodynamic equilibrium. Experimental evidence for the co-existence of the two conformers results from the NH...N 1H NMR spectra. When compared to the NH...N 1H NMR spectra of appropriate reference sequences the equilibrium position is easily quantifiable even without the assignment of the individual NH resonances. The reference sequences represent several… Expand
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