6N4K

Dithionite-reduced nucleotide-free form of the nitrogenase Fe-protein from A. vinelandii

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B	Nitrogenase iron protein 1	polymer	289	31417.0	2	UniProt (P00459) Pfam (PF00142) In PDB	Azotobacter vinelandii	Nitrogenase Fe protein 1,Nitrogenase component II,Nitrogenase reductase
2	A	IRON/SULFUR CLUSTER	non-polymer		351.6	1	Chemie (SF4)
3		water	water		18.0	46	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	62834.1
Non-Polymers*	Number of molecules	1
	Total formula weight	351.6
All*	Total formula weight	63185.7

*Water molecules are not included.