1.5.8.1	Iron	contains a [4Fe-4S]cluster that provides an output of single electrons to a flavoprotein which functions as a one-electron acceptor	
1.5.8.1	Iron	the enzyme as a possible model for electron transfer in iron-sulfur flavoproteins	
1.5.8.1	Iron	each subunit contains a [4Fe-4S]cluster	
1.5.8.1	Iron	contains 4.55 mol of iron and 3.91 mol of sulfur per mol of enzyme