4WN9

Structure of the Nitrogenase MoFe Protein from Clostridium pasteurianum Pressurized with Xenon

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, C	Nitrogenase molybdenum-iron protein alpha chain	polymer	518	57652.6	2	UniProt (P00467) Pfam (PF00148) In PDB	Clostridium pasteurianum	Dinitrogenase,Nitrogenase component I
2	B, D	Nitrogenase molybdenum-iron protein beta chain	polymer	458	50175.1	2	UniProt (P11347) Pfam (PF00148) In PDB	Clostridium pasteurianum	Dinitrogenase,Nitrogenase component I
3	A, C	3-HYDROXY-3-CARBOXY-ADIPIC ACID	non-polymer		206.2	2	Chemie (HCA)
4	A, C	iron-sulfur-molybdenum cluster with interstitial carbon	non-polymer		787.5	2	Chemie (ICS)
5	A, B, C, D	XENON	non-polymer		131.3	6	Chemie (XE)
6	A, C	FE(8)-S(7) CLUSTER	non-polymer		671.2	2	Chemie (CLF)
7	B, D	PROLINE	non-polymer		115.1	2	Chemie (PRO)
8	B	FE (III) ION	non-polymer		55.8	2	Chemie (FE)
9		water	water		18.0	1474	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	215655.6
Non-Polymers*	Number of molecules	16
	Total formula weight	4459.3
All*	Total formula weight	220114.9

*Water molecules are not included.