6UG0

N2-bound Nitrogenase MoFe-protein from Azotobacter vinelandii

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, C (A, C)	Nitrogenase molybdenum-iron protein alpha chain	polymer	492	55363.0	2	UniProt (P07328) Pfam (PF00148)	Azotobacter vinelandii	Dinitrogenase,Nitrogenase component I
2	B, D (B, D)	Nitrogenase molybdenum-iron protein beta chain	polymer	523	59535.9	2	UniProt (P07329) Pfam (PF11844) Pfam (PF00148)	Azotobacter vinelandii	Dinitrogenase, Nitrogenase component I
3	E, U (A, C)	3-HYDROXY-3-CARBOXY-ADIPIC ACID	non-polymer		206.2	2	Chemie (HCA)
4	F (A)	iron-sulfur-molybdenum cluster with interstitial carbon	non-polymer		755.4	1	Chemie (ICE)
5	DA, G, W (C, A)	NITROGEN MOLECULE	non-polymer		28.0	3	Chemie (HDZ)
6	H, HA, M, N, X... (A, D, B, C)	HYDROSULFURIC ACID	non-polymer		34.1	6	Chemie (H2S)
7	AA, BA, I, IA, J... (C, A, D, B)	MOLYBDENUM ATOM	non-polymer		95.9	8	Chemie (MO)
8	EA, L (C, A)	FE(8)-S(7) CLUSTER, OXIDIZED	non-polymer		671.2	2	Chemie (1CL)
9	P, S (B)	FE (III) ION	non-polymer		55.8	2	Chemie (FE)
10	CA, FA, GA, JA, Q... (C, D, B)	GLYCEROL	non-polymer		92.1	6	Chemie (GOL)
11	R (B)	TRIETHYLENE GLYCOL	non-polymer		150.2	1	Chemie (PGE)
12	V (C)	iron-sulfur-molybdenum cluster with interstitial carbon	non-polymer		723.3	1	Chemie (ICZ)
13	KA, LA, MA, NA (A, B, C, D)	water	water		18.0	777	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	229797.8
Non-Polymers*	Number of molecules	32
	Total formula weight	5103.9
All*	Total formula weight	234901.8

*Water molecules are not included.