1FFG

CHEY-BINDING DOMAIN OF CHEA IN COMPLEX WITH CHEY AT 2.1 A RESOLUTION

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, C (A, C)	CHEMOTAXIS PROTEIN CHEY	polymer	128	13981.1	2	UniProt (P06143) Pfam (PF00072) UniProt (by SIFTS) (P0AE67)	Escherichia coli
2	B, D (B, D)	CHEMOTAXIS PROTEIN CHEA	polymer	134	14505.4	2	UniProt (P07363) Pfam (PF09078)	Escherichia coli
3	E, F (A, C)	MANGANESE (II) ION	non-polymer		54.9	2	Chemie (MN)
4	G, H, I, J (A, B, C, D)	water	water		18.0	264	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	56973.0
Non-Polymers*	Number of molecules	2
	Total formula weight	109.9
All*	Total formula weight	57082.9

*Water molecules are not included.