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. Author manuscript; available in PMC: 2014 Jun 1.
Published in final edited form as: J Biomol NMR. 2013 Apr 23;56(2):125–137. doi: 10.1007/s10858-013-9729-7

Fig. 4.

Fig. 4

(a) The zinc mediated His97-His67' hydrogen bond that forms a part of the hydrogen-bonding pathway in Zn(II)-CzrA. The zinc ion is shown as a silver sphere while His97 and His67' residues are in licorice notation. The His97-His67' hydrogen bond is indicated with a dotted black line. (b) Normalized population distribution of heavy atom hydrogen bond distances (Nε-O) for the 2KJC ensemble of structures and the MRD-NMR ensemble of structures. The crystallographically determined His97-His67' distance is shown for comparison