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. 2013 Jan 22;8(1):e53706. doi: 10.1371/journal.pone.0053706

Figure 4. Active site structures of mouse and human SMP30/GNL.

Figure 4

(A) Mouse SMP30/GNL in the substrate-free form, (B) the mouse SMP30/GNL–1,5-AG complex, (C) the human SMP30/GNL–1,5-AG complex, (D) the mouse SMP30/GNL–d-glucose complex, and (E) the mouse SMP30/GNL–xylitol complex. Lid loop residues of mouse SMP30/GNL and human SMP30/GNL are shown in purple and blue, respectively. Carbon atoms of ligand residues for the divalent metal ion (orange sphere) and those for substrate/product analogues are shown in green and yellow, respectively. Other carbon atoms are shown in white.