1.13.11.88	Fe2+	presence of 0.7 mol iron per mol of enzyme	750091	
1.13.11.88	Fe2+	stimulates the enzyme activity	764371	
1.13.11.88	Fe3+	1 mM, 114% of initial activity	750091	
1.13.11.88	additional information	no significant changes of enzyme activity with Ca2+, Co2+, Mg2+, Li+, Mn2+ and Na+	764371