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. Author manuscript; available in PMC: 2012 Oct 12.
Published in final edited form as: Structure. 2011 Sep 8;19(10):1413–1423. doi: 10.1016/j.str.2011.06.019

Figure 3.

Figure 3

Recognition of folinic acid by the THF riboswitch. (A) Interactions between the RNA and the ligand in site PK. Hydrogen bonding interactions are denoted by gray dashes. For each nucleotide in direct contact with folinic acid, the degree of conservation observed across 57 sequences (Ames et al., 2010) is given as a percent identity of each nucleotide type. (B) Interactions between RNA and ligand in site 3WJ. (C) Recognition of guanine by the guanine riboswitch (from PDB ID 1Y27 (Serganov et al., 2004)). (D) Recognition of preQ1 by the preQ1 riboswitch (from PDB ID 2KFC (Klein et al., 2009)). See also Figures S1 and S5, and Table S1.