1MWC

WILD TYPE MYOGLOBIN WITH CO

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B (A, B)	PROTEIN (MYOGLOBIN)	polymer	153	16983.4	2	UniProt (P02189) Pfam (PF00042)	Sus scrofa (pig)
2	C, E (A, B)	PROTOPORPHYRIN IX CONTAINING FE	non-polymer		616.5	2	Chemie (HEM)
3	D, F (A, B)	CARBON MONOXIDE	non-polymer		28.0	2	Chemie (CMO)
4	G, H (A, B)	water	water		18.0	523	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	33966.9
Non-Polymers*	Number of molecules	4
	Total formula weight	1289.0
All*	Total formula weight	35255.9

*Water molecules are not included.