Table 2.

Na and K ions effect on activity.

Ions Concentration (mM)	Relative Activity (%)
	NaCl	KCl
0	100	100
10	201 ± 2.4	237 ± 5.6
20	292 ± 4.1	274 ± 3.5
50	168 ± 5.4	270 ± 1.7
80	135 ± 8.3	344.4 ± 2.9
100	246 ± 1.2	325 ± 2.7
150	120 ± 5.0	300 ± 6.2
200	131.5 ± 6.1	283.7 ± 7.5
300	140 ± 3.3	215 ± 1.8
400	215 ± 4.6	147 ± 0.4
500	197 ± 5.3	177 ± 8.0