Skip to main content
. 2015 Dec 18;5:18191. doi: 10.1038/srep18191

Figure 2. Secondary zinc binding to loop-3 enhances A3G and A3A deaminase activity.

Figure 2

Relative deamination activity of full-length A3G (A) as a function of increasing zinc concentrations, and of A3A (B) at increasing stoichiometric ratios of zinc. A representative gel showing the resolution of non-deaminated “ND” and deaminated “D” substrate of A3G is shown in (A). (C) Relative deamination activity of A3GCTD w.t. (striped bars) and H248S/H250S mutant (black bars) at increasing stoichiometric ratios of zinc. Data represent mean ± S.E.M. of three biological repeats. P-values (one-way ANOVA) calculated in comparison to control samples (absence of extra zinc). (D) ICP-AES data (mg/L) represent means ± S.E.M. of duplicate measurements at two concentrations (μM) of A3GCTD w.t. and H248S/H250S (HH/SS) compared to ZnCl2 as a control.