2YIE:
reference: Molecular sensing by the aptamer domain of the FMN riboswitch: a general model for ligand binding by conformational selection., Vicens Q, Mondragon E, Batey RT, Nucleic Acids Res. 2011 Oct 1;39(19):8586-98. Epub 2011 Jul 10. PMID: 21745821

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