9FMG

Methylthio-alkane reductase complex

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A (A)	Nitrogenase	polymer	519	57560.2	1	UniProt (Q2RW97) Pfam (PF00148)	Rhodospirillum rubrum
2	B, C (B, C)	Nitrogenase	polymer	466	50856.3	2	UniProt (Q2RW98) Pfam (PF00148)	Rhodospirillum rubrum
3	D, E (D, E)	Nitrogenase iron protein	polymer	297	31914.8	2	UniProt (Q2RW96) Pfam (PF00142)	Rhodospirillum rubrum	Nitrogenase Fe protein,Nitrogenase component II,Nitrogenase reductase
4	F (A)	FeFe cofactor	non-polymer		747.4	1	Chemie (S5Q)
5	G (B)	FE(8)-S(7) CLUSTER	non-polymer		671.2	1	Chemie (CLF)
6	H, L (D, E)	ADENOSINE-5'-DIPHOSPHATE	non-polymer		427.2	2	Chemie (ADP)
7	I, M (D, E)	MAGNESIUM ION	non-polymer		24.3	2	Chemie (MG)
8	J, N (D, E)	ALUMINUM FLUORIDE	non-polymer		84.0	2	Chemie (AF3)
9	K (D)	IRON/SULFUR CLUSTER	non-polymer		351.6	1	Chemie (SF4)

Sequence modifications

A: 1 - 511 (UniProt: Q2RW97)

PDB	External Database	Details
Trp 512	-	expression tag
Ser 513	-	expression tag
His 514	-	expression tag
Pro 515	-	expression tag
Gln 516	-	expression tag
Phe 517	-	expression tag
Glu 518	-	expression tag
Lys 519	-	expression tag

D, E: 2 - 291 (UniProt: Q2RW96)

PDB	External Database	Details
Met -5	-	initiating methionine
His -4	-	expression tag
His -3	-	expression tag
His -2	-	expression tag
His -1	-	expression tag
His 0	-	expression tag
His 1	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	5
	Total formula weight	223102.3
Non-Polymers*	Number of molecules	9
	Total formula weight	2841.2
All*	Total formula weight	225943.5

*Water molecules are not included.