1XJ4

CO-bound structure of BjFixLH

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B (A, B)	Sensor protein fixL	polymer	119	13413.1	2	UniProt (P23222) Pfam (PF00989)	Bradyrhizobium japonicum	BjFixLH FixL
2	C, D (A)	SODIUM ION	non-polymer		23.0	2	Chemie (NA)
3	E (A)	CHLORIDE ION	non-polymer		35.5	1	Chemie (CL)
4	F, H (A, B)	PROTOPORPHYRIN IX CONTAINING FE	non-polymer		616.5	2	Chemie (HEM)
5	G, I (A, B)	CARBON MONOXIDE	non-polymer		28.0	2	Chemie (CMO)
6	J, K (A, B)	water	water		18.0	81	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	26826.2
Non-Polymers*	Number of molecules	7
	Total formula weight	1370.4
All*	Total formula weight	28196.6

*Water molecules are not included.