1JY7

THE STRUCTURE OF HUMAN METHEMOGLOBIN. THE VARIATION OF A THEME

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... (A, C, P, R, U...)	Hemoglobin alpha chain	polymer	141	15150.4	6	UniProt (P69905) Pfam (PF00042)	Homo sapiens (human)
2	B, D, F, H, J... (B, D, Q, S, V...)	Hemoglobin beta chain	polymer	146	15890.2	6	UniProt (P68871) Pfam (PF00042)	Homo sapiens (human)
3	M, N, O, P, Q... (A, B, C, D, P...)	PROTOPORPHYRIN IX CONTAINING FE	non-polymer		616.5	12	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	7397.8
All*	Total formula weight	193641.1

*Water molecules are not included.