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. Author manuscript; available in PMC: 2016 Apr 29.
Published in final edited form as: Eur Biophys J. 2011 Jun 28;40(11):1259–1270. doi: 10.1007/s00249-011-0713-4

Table 2.

List of proposed Zn2+ coordination models (column 1) with n the number of Zn2+ bound His’s (column 2)

Two-component
model		 n [Zn2+]His (in %) [Zn2+]buffer (in %)
M1 1 0.42 mM (70) 0.18 mM (30)
M2 2 0.21 mM (35) 0.39 mM (65)
M3 3 0.14 mM (23) 0.46 mM (77)
M4 4 0.11 mM (18) 0.49 mM (82)

Columns 3 and 4 report the Zn2+ concentrations (in %) bound to His units, [Zn2+]His, and free in solution, [Zn2+]buffer, respectively