2.1.1.56 KCl - 485457 2.1.1.56 KCl no activation 485462 2.1.1.56 Mg2+ activation 485454, 485457 2.1.1.56 Mg2+ contains Mg2+, maximum activity in the presence of Mg2+ 758535 2.1.1.56 Mg2+ inactivation 485462 2.1.1.56 Mg2+ not required 485458 2.1.1.56 Mn2+ activation 485454 2.1.1.56 Mn2+ inhibition 485462 2.1.1.56 additional information - 485457 2.1.1.56 additional information no activation by NaCl 485462