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. 2013 Sep 19;8(9):e74788. doi: 10.1371/journal.pone.0074788

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© 2013 Xu et al

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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NX-5/sucrose and MutB/sucrose.

(A) Structural alignment of the active site residues between NX-5/sucrose (PDB ID: 4HPH, green) and MutB/sucrose (2PWE, cyan). The sucrose molecule in NX-5 is colored yellow, whereas that in MutB is colored red. Residues from NX-5 are labeled. (B) Structural comparison of³²⁵RLDRD³²⁹ in NX-5 (green) and²⁸⁴RYDRA²⁸⁸ (cyan) residues in MutB. (C) Structural and sequence comparison of loop^330-339 (black) in NX-5 and the corresponding loop^289-297 (red) of MutB.