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. Author manuscript; available in PMC: 2015 Jan 1.
Published in final edited form as: RSC Adv. 2014 Apr 16;4(39):20398–20440. doi: 10.1039/C4RA00354C

Fig. 31.

Fig. 31

Structures of metal-buffering ligands that have been used in Zn(II) titration experiments. The pZn values were measured at ligand concentration = 10 μM, total Zn(II) concentration = 1 μM, pH = 7.0, I = 0.1, and 25 °C.241 Unlisted are carbonic anhydrase, pZn = 12.4, and a decidedly non-1:1 binding Zn(II) indicator Zinquin, pZn = 9.3.245