Table 1.

Effects of metal ions and chemicals on AiiA_AI96 activity

Chemical	Mean relative activity (%) ± SD at concn (mM) ofa:
	1	10
None	100.00	100.00
Na+	98.65 ± 0.22	99.52 ± 0.00
K+	99.33 ± 0.00	99.52 ± 0.00
Li+	99.33 ± 0.00	99.52 ± 0.00
Ca2+	99.59 ± 0.11	99.52 ± 0.00
Mg2+	99.02 ± 0.22	83.58 ± 0.00
Co2+	99.33 ± 0.00	167.03 ± 0.22
Cr3+	99.02 ± 0.22	118.12 ± 0.22
Cu2+	99.33 ± 0.00	99.52 ± 0.00
Ni2+	99.33 ± 0.00	99.52 ± 0.00
Zn2+	99.33 ± 0.00	99.78 ± 0.11
Pb3+	99.33 ± 0.00	118.12 ± 0.22
Fe2+	99.81 ± 0.11	118.12 ± 0.22
Mn2+	99.02 ± 0.22	118.43 ± 0.00
Ag+	21.86 ± 1.10	21.90 ± 0.53
SDS	83.67 ± 0.00	40.61 ± 0.00
β-Mercaptoethanol	99.33 ± 0.00	99.52 ± 0.00
EDTA	99.59 ± 0.10	99.52 ± 0.00

^aEach value is the mean ± standard deviation (n = 3) and was normalized to the control value.