Table 2 Dependence of the Na/K-ATPase activity on NA with various [Ca2+], in the presence of 0.3 mM EGTA and 5 μg/ml SF. The activity at [NA] = 0 is considered as 100% (Number of identical measurements is 6)
From: The effect of EGTA and Ca++ in regulation of the brain Na/K-ATP-ase by noradrenaline
NA, | The Na/K-ATPase activity (%) | ||
|---|---|---|---|
mM | [Ca2+] = 0.06 mM | [Ca2+] = 0.35 mM | [Ca2+] = 0.6 mM |
0.025 | 112.7 ± 3.1 | 111.9 ± 3.3 | 109.7 ± 2.4 |
0.05 | 106.8 ± 1.7 | 106.9 ± 2.6 | 109.7 ± 2.6 |
0.1 | 110.5 ± 4.6 | 108.7 ± 3.7 | 111.3 ± 3.4 |
0.5 | 93.2 ± 3.6 | 91.1 ± 2.4 | 90.0 ± 3.6 |
1 | 85.7 ± 2.3 | 86.1 ± 3.2 | 85.5 ± 4.1 |