Multiple Assemblies exist for SMTL entry 3cir
E. coli Quinol fumarate reductase FrdA T234A mutation; X-RAY DIFFRACTION 3.65 Å

	SMTL ID 3cir.1 Ligands FLAVIN-ADENINE DINUCLEOTIDE; FE2/S2 (INORGANIC) CLUSTER; FE3-S4 CLUSTER; IRON/SULFUR CLUSTER Polypeptides Fumarate reductase flavoprotein subunit; Fumarate reductase iron-sulfur subunit; Fumarate reductase subunit C; Fumarate reductase subunit D Oligo-state hetero-1-1-1-1-mer
	SMTL ID 3cir.2 Ligands FLAVIN-ADENINE DINUCLEOTIDE; FE2/S2 (INORGANIC) CLUSTER; FE3-S4 CLUSTER; IRON/SULFUR CLUSTER Polypeptides Fumarate reductase flavoprotein subunit; Fumarate reductase iron-sulfur subunit; Fumarate reductase subunit C; Fumarate reductase subunit D Oligo-state hetero-1-1-1-1-mer