2.7.8.32 Co2+ 15% of the activity compared to Mn2+ as metal ion cofactor 704602 2.7.8.32 Mg2+ 15% of the activity compared to Mn2+ as metal ion cofactor 704602 2.7.8.32 Mn2+ preferred metal ion cofactor 704602 2.7.8.32 additional information no activity in presence of Ca2+, Cu2+, Ni2+, Zn2+ or Fe2+ 704602