5NI1

CryoEM structure of haemoglobin at 3.2 A determined with the Volta phase plate

Replaces:  5ME2

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, C	Hemoglobin subunit alpha	polymer	141	15150.4	2	UniProt (P69905) Pfam (PF00042) In PDB	Homo sapiens (Human)	Alpha-globin,Hemoglobin alpha chain
2	B, D	Hemoglobin subunit beta	polymer	146	15890.2	2	UniProt (P68871) Pfam (PF00042) In PDB	Homo sapiens (Human)	Beta-globin,Hemoglobin beta chain
3	A, B, C, D	PROTOPORPHYRIN IX CONTAINING FE	non-polymer		616.5	4	Chemie (HEM)
4		water	water		18.0	24	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	62081.1
Non-Polymers*	Number of molecules	4
	Total formula weight	2465.9
All*	Total formula weight	64547.0

*Water molecules are not included.