5T83:
reference: Structural Basis for Ligand Binding to the Guanidine-I Riboswitch., Reiss CW, Xiong Y, Strobel SA, Structure. 2017 Jan 3;25(1):195-202. doi: 10.1016/j.str.2016.11.020. Epub 2016, Dec 22. PMID: 28017522

This OCA Structure page
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