3.1.1.79 K+ 10 M, 40% stimulation 706584 3.1.1.79 KCl enhances activity 665729 3.1.1.79 NaCl enhances activity 665729 3.1.1.79 NaCl moderate stability with NaCl up to 2.5 M with the residual activity being over 75%, 1 h, 25°C 750161