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. Author manuscript; available in PMC: 2015 Jan 14.
Published in final edited form as: Nat Chem Biol. 2014 Aug 3;10(9):787–792. doi: 10.1038/nchembio.1607

Figure 2. Structural elements of the T. pseudethanolicus c-di-AMP riboswitch.

Figure 2

(a, b) Structures of the ligand binding sites 1 (a) and 2 (b) shown with nucleotides that either interact with ligands directly or depend on ligand binding. (c) Structure of the double turn bound to c-di-AMP. Mg2+ cations are shown as green spheres. (d) Structure of the pseudoknot and J1-8 region bound to c-di-AMP.