4LW0:
reference: A Disconnect between High-Affinity Binding and Efficient Regulation by Antifolates and Purines in the Tetrahydrofolate Riboswitch., Trausch JJ, Batey RT, Chem Biol. 2014 Feb 20;21(2):205-16. doi: 10.1016/j.chembiol.2013.11.012. Epub, 2014 Jan 2. PMID: 24388757

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