4N7P

Capturing the haemoglobin allosteric transition in a single crystal form; Crystal structure of half-liganded human haemoglobin without phosphate at 2.8 A resolution.

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, C, E, G, I...	Hemoglobin subunit alpha	polymer	141	15150.4	6	UniProt (P69905) Pfam (PF00042) In PDB	Homo sapiens (human)	Alpha-globin, Hemoglobin alpha chain
2	B, D, F, H, J...	Hemoglobin subunit beta	polymer	146	15890.2	6	UniProt (P68871) Pfam (PF00042) In PDB	Homo sapiens (human)	Beta-globin, Hemoglobin beta chain, LVV-hemorphin-7
3	A, D, E, H, I...	PROTOPORPHYRIN IX CONTAINING NI(II)	non-polymer		619.3	6	Chemie (HNI)
4	B, C, F, G, J...	PROTOPORPHYRIN IX CONTAINING FE	non-polymer		616.5	6	Chemie (HEM)

Contents of the asymmetric unit

Polymers	Number of chains	12
	Total formula weight	186243.3
Non-Polymers*	Number of molecules	12
	Total formula weight	7414.9
All*	Total formula weight	193658.2

*Water molecules are not included.