1.17.1.9	Ca2+	1 mM Ca2+ improves the enzyme activity by 77%	724094	
1.17.1.9	Ca2+	the enzyme activity is increased 13.8% over the control by 1 mM Ca2+	725222	
1.17.1.9	Co2+	1 mM Co2+ improves the enzyme activity by 46%	724094	
1.17.1.9	Co2+	the enzyme activity is increased 9.8% over the control by 1 mM Co2+	725222	
1.17.1.9	Fe	5-8 mol of iron per mol of enzyme	288087	
1.17.1.9	Fe	contains 11-18 gatoms of non-heme iron per mol of enzyme	288083	
1.17.1.9	Fe	formate dehydrogenase I contains 18-25 mol of iron per mol of enzyme. Formate dehydrogenase II contains 6-10 mol of iron per mol of enzyme	288092	
1.17.1.9	Fe	two distinct [Fe-S] centres	288120	
1.17.1.9	Fe2+	the enzyme activity is increased 49.4% over the control by 1 mM Fe2+	725222	
1.17.1.9	Iron	contains 5 mol nonheme iron per mol of enzyme. The beta-subunit contains a putative binding motif for an iron-sulfur cluster. The alpha-subunit contains at least one iron-sulfur cluster	655461	
1.17.1.9	K+	the enzyme activity is increased 6.7% over the control by 1 mM K+	725222	
1.17.1.9	Li+	the enzyme activity is increased 13.8% over the control by 1 mM Li+	725222	
1.17.1.9	Mg2+	the enzyme activity is increased 7.6% over the control by 1 mM Mg2+	725222	
1.17.1.9	Mn2+	the enzyme activity is increased 29.8% over the control by 1 mM Mn2+	725222	
1.17.1.9	Molybdenum	0.64 gatom per mol of enzyme. The enzyme contains molybdopterin guanine dinucleotide	288123	
1.17.1.9	Molybdenum	contains molybdenum	740767, 740775	
1.17.1.9	Molybdenum	molybdoenzyme	697332	
1.17.1.9	additional information	Li+, Na+, K+, NH4+, Cl?, HPO42-, HCO3-, and SO42- at 100 mM have scarcely effect on the enzymatic activity. The enzyme activity is very slightly increased in the presence of 1 mM Co2+, Ni2+, Cu2+, Zn2+, Fe3+, Mn2+, Mg2+, Ca2+, and NH4+	740397	
1.17.1.9	additional information	Mn2+, Ba2+, and Mg2+ do not significantly change the enzyme activity	724094	
1.17.1.9	additional information	no divalent metal cation is needed as a cofactor for enzyme activity	686800	
1.17.1.9	Tungsten	contains 1.8 mol tungsten per mol of enzyme	655461