6S1K

E. coli Core Signaling Unit, carrying QQQQ receptor mutation

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B	Chemotaxis protein CheA	polymer	654	71454.2	2	UniProt (P07363) Pfam (PF01627) Pfam (PF09078) Pfam (PF02895) Pfam (PF02518) Pfam (PF01584) In PDB	Escherichia coli str. K-12 substr. MG1655star
2	C, D	CheW	polymer	167	18095.7	2	Pfam (PF01584) UniProt (by SIFTS) (P0A964) In PDB	Escherichia coli str. K-12 substr. MG1655star
3	E, F, G, H, I...	Methyl-accepting chemotaxis protein I	polymer	551	59495.8	12	UniProt (P02942) Pfam (PF02203) Pfam (PF00672) Pfam (PF00015) In PDB	Escherichia coli str. K-12 substr. MG1655star	MCP-I,Serine chemoreceptor protein

Contents of the asymmetric unit

Polymers	Number of chains	16
	Total formula weight	893048.8
All*	Total formula weight	893048.8

*Water molecules are not included.