1HSL

REFINED 1.89 ANGSTROMS STRUCTURE OF THE HISTIDINE-BINDING PROTEIN COMPLEXED WITH HISTIDINE AND ITS RELATIONSHIP WITH MANY OTHER ACTIVE TRANSPORT(SLASH)CHEMOSENSORY RECEPTORS

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)	HISTIDINE-BINDING PROTEIN	polymer	238	26189.6	2	UniProt (P39182) Pfam (PF00497) UniProt (by SIFTS) (P0AEU0)	Escherichia coli
2	C, D, E, F, G... (A, B)	CADMIUM ION	non-polymer		112.4	7	Chemie (CD)
3	H, K (A, B)	HISTIDINE	non-polymer		156.2	2	Chemie (HIS)
4	L, M (A, B)	water	water		18.0	286	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	52379.2
Non-Polymers*	Number of molecules	9
	Total formula weight	1099.2
All*	Total formula weight	53478.4

*Water molecules are not included.