Multiple Assemblies exist for SMTL entry 6r4q
Crystal structure of the periplasmic nickel-binding protein NikA from Escherichia coli in complex with Ru(bpza)CO H2O Cl; X-RAY DIFFRACTION 1.90 Å

	SMTL ID 6r4q.1 Ligands FE (III) ION; {[-(BIS-CARBOXYMETHYL-AMINO)-ETHYL]-CARBOXYMETHYL-AMINO}-ACETIC ACID; CHLORIDE ION; GLYCEROL; ACETATE ION Polypeptides Nickel-binding periplasmic protein Oligo-state monomer
	SMTL ID 6r4q.2 Ligands RUTHENIUM ION; bis(pyrzol-1-yl)acetate scorpionate; CHLORIDE ION; CARBON MONOXIDE; GLYCEROL; ACETATE ION Polypeptides Nickel-binding periplasmic protein Oligo-state monomer