3PDI

Precursor bound NifEN

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, C, E, G	Nitrogenase MoFe cofactor biosynthesis protein NifE	polymer	483	53046.4	4	UniProt (C1DH03) Pfam (PF00148) In PDB	Azotobacter vinelandii
2	B, D, F, H	Nitrogenase MoFe cofactor biosynthesis protein NifN	polymer	458	49302.0	4	UniProt (C1DH04) Pfam (PF00148) In PDB	Azotobacter vinelandii
3	A, C, E, G	IRON/SULFUR CLUSTER	non-polymer		351.6	4	Chemie (SF4)
4	A, C, E, G	L-Cluster (Fe8S9)	non-polymer		741.4	4	Chemie (CZL)

Sequence modifications

A, C, E, G: 1 - 475 (UniProt: C1DH03)

PDB	External Database	Details
Met -7	-	expression tag
His -6	-	expression tag
His -5	-	expression tag
His -4	-	expression tag
His -3	-	expression tag
His -2	-	expression tag
His -1	-	expression tag
His 0	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	8
	Total formula weight	409393.6
Non-Polymers*	Number of molecules	8
	Total formula weight	4372.1
All*	Total formula weight	413765.7

*Water molecules are not included.