1.7.7.1	Fe	contains one siroheme and one [4Fe-4S] cluster	658068	
1.7.7.1	Fe	contains siroheme and Fe-S clusters	660264	
1.7.7.1	Fe	enzyme contains siroheme and a [4Fe-4S] cluster	658019	
1.7.7.1	Iron	-	208103, 394396, 394411, 394419, 394426	
1.7.7.1	Iron	0.65 molecules of siroheme per enzyme molecule	394394	
1.7.7.1	Iron	2 atoms of iron probably bound in the chromophoric group	394413	
1.7.7.1	Iron	4.8 Fe atoms per molecule of MW 63000, 0.93 mol siroheme per mol of enzyme	394399	
1.7.7.1	Iron	7 mol of iron per 86000 MW protein	394410	
1.7.7.1	Iron	contains 2 mol of Fe per mol	394404	
1.7.7.1	Iron	contains about 2 mol of siroheme per mol of enzyme, 3 mol of iron per mol of enzyme (MW 61000), one in siroheme, one (Fe2-S2)	394412	
1.7.7.1	Iron	enzyme contains 1 tetranuclear center (4Fe-4S) and 1 siroheme, minimum of 5 Fe atoms per active enzyme molecule	208103, 394396