Multiple Assemblies exist for SMTL entry 3w4u
Human zeta-2 beta-2-s hemoglobin; X-RAY DIFFRACTION 1.95 Å

	SMTL ID 3w4u.1 Ligands PROTOPORPHYRIN IX CONTAINING FE; CARBON MONOXIDE Polypeptides Hemoglobin subunit zeta; Hemoglobin subunit beta Oligo-state hetero-2-2-mer
	SMTL ID 3w4u.2 Ligands PROTOPORPHYRIN IX CONTAINING FE; CARBON MONOXIDE Polypeptides Hemoglobin subunit zeta; Hemoglobin subunit beta Oligo-state hetero-2-2-mer