Multiple Assemblies exist for SMTL entry 1u56
Crystal structure of an oxygen binding H-NOX domain related to soluble guanylate cyclases (Water-ligated, ferric form); X-RAY DIFFRACTION 1.90 Å

	SMTL ID 1u56.1 Ligands PROTOPORPHYRIN IX CONTAINING FE Polypeptides Heme-based Methyl-accepting chemotaxis protein Oligo-state monomer
	SMTL ID 1u56.2 Ligands CHLORIDE ION; PROTOPORPHYRIN IX CONTAINING FE Polypeptides Heme-based Methyl-accepting chemotaxis protein Oligo-state monomer
	SMTL ID 1u56.3 Ligands PROTOPORPHYRIN IX CONTAINING FE; CHLORIDE ION Polypeptides Heme-based Methyl-accepting chemotaxis protein Oligo-state homo-dimer