1.2.7.B2	Calcium	contains approximately 1 W atom, 4 Fe atoms, and 1 Ca atom per subunit	644689	
1.2.7.B2	Iron	an electron transfer pathway is proposed that begins at the tungsten center, leads to the (4Fe-4S) cluster of formaldehyde ferredoxin oxidoreductase via one of the two pterins that coordinate the tungsten, and ends at the (4Fe-4S) cluster of ferredoxin. This pathway includes two residues that coordinate the (4Fe-4S) clusters, Cys287 of FOR and Asp14 of ferredoxin	644690	
1.2.7.B2	Iron	contains approximately 1 W atom, 4 Fe atoms, and 1 Ca atom per subunit	644689	
1.2.7.B2	Iron	contains one [4Fe-4S] cubane per 69000 Da subunit	674933	
1.2.7.B2	Iron	enzyme contains an [Fe4S4]+ cluster	722824	
1.2.7.B2	Iron	the enzyme contains 16.0 gatom of iron per 280000 Da g of enzyme. Each subunit of dithionite reduced enzyme contains a magnetically isolated [4Fe-4S]1+ cluster that exists in both the S = 3/2 and S = 1/2 states	644682	
1.2.7.B2	Mo5+	molybdenum can be incorporated, Mo(V) signal is observed in electron paramagnetic resonance. Aldehyde oxidation activity correlates only with the residual tungsten content. This suggests that the Mo-containing enzymes are most likely inactive. An intracellular selection mechanism for tungstate and molybdate processing has to be present, since tungsten is found to be preferentially incorporated even under conditions with comparable intracellular concentrations of tungstate and molybdate	745210	
1.2.7.B2	Tungsten	a W(VI) species with terminal sulfido or thiol ligands is proposed to be responsible for the catalytic activity in sulfide-activated samples of formaldehyde ferredoxin oxidoreductase	722824	
1.2.7.B2	Tungsten	an electron transfer pathway is proposed that begins at the tungsten center, leads to the (4Fe-4S) cluster of formaldehyde ferredoxin oxidoreductase via one of the two pterins that coordinate the tungsten, and ends at the (4Fe-4S) cluster of ferredoxin. This pathway includes two residues that coordinate the (4Fe-4S) clusters, Cys287 of FOR and Asp14 of ferredoxin	644690	
1.2.7.B2	Tungsten	contains one tungstodipterin per 69000 Da subunit	674933