8DFD

CryoEM structure of the 2:1 ADP-tetrafluoroaluminate stabilized nitrogenase complex 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, F, G, H (E, F, G, H)	Nitrogenase iron protein 1	polymer	290	31548.2	4	UniProt (P00459) Pfam (PF00142)	Azotobacter vinelandii	Nitrogenase Fe protein 1,Nitrogenase component II,Nitrogenase reductase
4	I, M (A, C)	iron-sulfur-molybdenum cluster with interstitial carbon	non-polymer		787.5	2	Chemie (ICS)
5	J, N (A, C)	3-HYDROXY-3-CARBOXY-ADIPIC ACID	non-polymer		206.2	2	Chemie (HCA)
6	K, O (B, D)	FE(8)-S(7) CLUSTER	non-polymer		671.2	2	Chemie (CLF)
7	L, P (B, D)	FE (III) ION	non-polymer		55.8	2	Chemie (FE)
8	AA, Q (H, E)	IRON/SULFUR CLUSTER	non-polymer		351.6	2	Chemie (SF4)
9	BA, R, U, X (H, E, F, G)	ADENOSINE-5'-DIPHOSPHATE	non-polymer		427.2	4	Chemie (ADP)
10	CA, S, V, Y (H, E, F, G)	TETRAFLUOROALUMINATE ION	non-polymer		103.0	4	Chemie (ALF)
11	DA, T, W, Z (H, E, F, G)	MAGNESIUM ION	non-polymer		24.3	4	Chemie (MG)
12	EA, FA, GA, HA, IA... (A, B, C, D, E...)	water	water		18.0	1850	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	8
	Total formula weight	355990.8
Non-Polymers*	Number of molecules	22
	Total formula weight	6362.5
All*	Total formula weight	362353.3

*Water molecules are not included.