3.6.1.66	Mg2+	absolute requirement for Mg2+. At 10 mM Mg2+ concentration, the enzyme reaches a plateau of optimum activity. Other divalent and monovalent cations barely support the catalytic activity of TM0159. Samples containing up to 100 mM Mn2+, Zn2+, Co2+, Cu2+, Na+, K+ or Li+ show less than 10% of the activity measured at 10 mM Mg2+	746613	
3.6.1.66	Mg2+	contains Mg2+	756533	
3.6.1.66	Mg2+	NTPase activities are most efficient in the presence of either Mg2+ or Mn2+ at 80°C	728362	
3.6.1.66	Mg2+	the enzyme requires a divalent cation. Mg2+ is required for optimal activity, with Mn2+, Zn2+ and Ni2+ supporting less than 50% of the maximum rate	723282	
3.6.1.66	Mn2+	NTPase activities are most efficient in the presence of either Mg2+ or Mn2+ at 80°C	728362	
3.6.1.66	Ni2+	the enzyme requires a divalent cation. Mg2+ is required for optimal activity, with Mn2+, Zn2+ and Ni2+ supporting less than 50% of the maximum rate	723282	
3.6.1.66	Zn2+	the enzyme requires a divalent cation. Mg2+ is required for optimal activity, with Mn2+, Zn2+ and Ni2+ supporting less than 50% of the maximum rate	723282