3NOS

HUMAN ENDOTHELIAL NITRIC OXIDE SYNTHASE WITH ARGININE SUBSTRATE

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)	ENDOTHELIAL NITRIC-OXIDE SYNTHASE	polymer	427	48019.4	2	UniProt (P29474) Pfam (PF02898)	Homo sapiens (human)	ENOS, NOS3
2	C (A)	ZINC ION	non-polymer		65.4	1	Chemie (ZN)
3	D, G (A, B)	N-OMEGA-HYDROXY-L-ARGININE	non-polymer		190.2	2	Chemie (HAR)
4	E, H (A, B)	PROTOPORPHYRIN IX CONTAINING FE	non-polymer		616.5	2	Chemie (HEM)
5	F, I (A, B)	5,6,7,8-TETRAHYDROBIOPTERIN	non-polymer		241.2	2	Chemie (H4B)
6	J, K (A, B)	water	water		18.0	499	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	96038.8
Non-Polymers*	Number of molecules	7
	Total formula weight	2161.3
All*	Total formula weight	98200.1

*Water molecules are not included.