7UTA

CryoEM structure of Azotobacter vinelandii nitrogenase complex (2:1 FeP:MoFeP) inhibited by BeFx during catalytic N2 reduction

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 DJ	Dinitrogenase,Nitrogenase component I
2	B, D (B, D)	Nitrogenase molybdenum-iron protein beta chain	polymer	523	59535.9	2	UniProt (C1DGZ8) Pfam (PF11844) Pfam (PF00148) UniProt (by SIFTS) (P07329)	Azotobacter vinelandii DJ	Dinitrogenase
3	E, F, G, H (E, F, G, H)	Nitrogenase iron protein gamma chain	polymer	290	31548.2	4	UniProt (C1DGZ6) Pfam (PF00142) UniProt (by SIFTS) (P00459)	Azotobacter vinelandii DJ	Nitrogenase Fe protein,Nitrogenase component II,Nitrogenase reductase
4	I, N (A, C)	3-HYDROXY-3-CARBOXY-ADIPIC ACID	non-polymer		206.2	2	Chemie (HCA)
5	J, O (A, C)	iron-sulfur-molybdenum cluster with interstitial carbon	non-polymer		787.5	2	Chemie (ICS)
6	K, P (B, D)	FE(8)-S(7) CLUSTER	non-polymer		671.2	2	Chemie (CLF)
7	L, M (B)	FE (III) ION	non-polymer		55.8	2	Chemie (FE)
8	Q, X (E, G)	IRON/SULFUR CLUSTER	non-polymer		351.6	2	Chemie (SF4)
9	BA, R, U, Y (H, E, F, G)	MAGNESIUM ION	non-polymer		24.3	4	Chemie (MG)
10	CA, S, V, Z (H, E, F, G)	ADENOSINE-5'-DIPHOSPHATE	non-polymer		427.2	4	Chemie (ADP)
11	AA, DA, T, W (G, H, E, F)	BERYLLIUM	non-polymer		9.0	4	Chemie (0BE)
12	EA, FA, GA, HA (A, B, C, D)	water	water		18.0	55	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	5986.7
All*	Total formula weight	361977.5

*Water molecules are not included.