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. Author manuscript; available in PMC: 2013 Jan 22.
Published in final edited form as: Mol Microbiol. 2011 Nov 20;83(1):85–95. doi: 10.1111/j.1365-2958.2011.07914.x

Fig. 4.

Fig. 4

The hydrogen bond network for proton shuttling during catalysis in the active site of FurX. (A) Apo-form, (B) NAD(H) complex in its partially closed conformation, (C) NAD(H) complex in its fully closed conformation. Dotted lines in blue indicate the possible hydrogen bonds among the functional groups during catalysis.