Multiple Assemblies exist for SMTL entry 1kf6
E. coli Quinol-Fumarate Reductase with Bound Inhibitor HQNO; X-RAY DIFFRACTION 2.70 Å

	SMTL ID 1kf6.1 Ligands POTASSIUM ION; OXALOACETATE ION; ACETATE ION; FLAVIN-ADENINE DINUCLEOTIDE; PENTAETHYLENE GLYCOL; FE2/S2 (INORGANIC) CLUSTER; FE3-S4 CLUSTER; IRON/SULFUR CLUSTER; 2-HEPTYL-4-HYDROXY QUINOLINE N-OXIDE Polypeptides FUMARATE REDUCTASE FLAVOPROTEIN; FUMARATE REDUCTASE IRON-SULFUR PROTEIN; FUMARATE REDUCTASE 15 KDA HYDROPHOBIC PROTEIN; FUMARATE REDUCTASE 13 KDA HYDROPHOBIC PROTEIN Oligo-state hetero-1-1-1-1-mer
	SMTL ID 1kf6.2 Ligands POTASSIUM ION; OXALOACETATE ION; FLAVIN-ADENINE DINUCLEOTIDE; ACETATE ION; FE2/S2 (INORGANIC) CLUSTER; FE3-S4 CLUSTER; IRON/SULFUR CLUSTER; 2-HEPTYL-4-HYDROXY QUINOLINE N-OXIDE; O-DODECANYL OCTAETHYLENE GLYCOL Polypeptides FUMARATE REDUCTASE FLAVOPROTEIN; FUMARATE REDUCTASE IRON-SULFUR PROTEIN; FUMARATE REDUCTASE 15 KDA HYDROPHOBIC PROTEIN; FUMARATE REDUCTASE 13 KDA HYDROPHOBIC PROTEIN Oligo-state hetero-1-1-1-1-mer
	SMTL ID 1kf6.3 Ligands POTASSIUM ION; OXALOACETATE ION; ACETATE ION; FLAVIN-ADENINE DINUCLEOTIDE; PENTAETHYLENE GLYCOL; FE2/S2 (INORGANIC) CLUSTER; FE3-S4 CLUSTER; IRON/SULFUR CLUSTER; 2-HEPTYL-4-HYDROXY QUINOLINE N-OXIDE; O-DODECANYL OCTAETHYLENE GLYCOL Polypeptides FUMARATE REDUCTASE FLAVOPROTEIN; FUMARATE REDUCTASE IRON-SULFUR PROTEIN; FUMARATE REDUCTASE 15 KDA HYDROPHOBIC PROTEIN; FUMARATE REDUCTASE 13 KDA HYDROPHOBIC PROTEIN Oligo-state hetero-2-2-2-2-mer