Table 1.

Effects of metal ions or chemical reagents on TlXyn11B activity.

Chemicals	Relative activity (%)a
	1 mM	5 mM	10 mM
Control	100.0 ± 2.2	100.0 ± 1.7	100.0 ± 3.1
K+	103.2 ± 1.1	112.8 ± 1.7	116.3 ± 4.4
Mg2+	99.4 ± 2.4	106.9 ± 4.0	101.7 ± 2.7
Na+	101.4 ± 1.5	107.5 ± 12.3	105.5 ± 7.5
Ca2+	100.8 ± 3.3	109.3 ± 0.9	104.6 ± 4.2
Pb2+	92.1 ± 4.6	86.5 ± 2.3	58.2 ± 5.6
Mn2+	96.3 ± 3.2	82.9 ± 0.9	64.2 ± 10.7
Ni2+	102.6 ± 1.3	107.8 ± 0.4	98.2 ± 2.4
Cr3+	105.4 ± 3.8	101.8 ± 5.9	96.4 ± 4.5
Cu2+	90.9 ± 5.2	85.6 ± 8.6	68.1 ± 3.7
Zn2+	101.3 ± 7.1	99.9 ± 1.2	96.4 ± 0.3
Fe3+	88.4 ± 3.6	54.7 ± 1.3	22.3 ± 5.2
EDTA	104.8 ± 6.3	113.3 ± 8.9	106.6 ± 5.8
SDS	73.6 ± 2.5	33.1 ± 5.6	11.5 ± 3.7

^aData are shown as mean ± SD (n = 3).