2CH4

Complex between Bacterial Chemotaxis histidine kinase CheA domains P4 and P5 and receptor-adaptor protein CheW

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)	CHEMOTAXIS PROTEIN CHEA	polymer	320	35551.1	2	UniProt (Q56310) Pfam (PF02518) Pfam (PF01584)	THERMOTOGA MARITIMA
2	C, D (W, Y)	CHEMOTAXIS PROTEIN CHEW	polymer	151	16977.8	2	UniProt (Q56311) Pfam (PF01584)	THERMOTOGA MARITIMA
3	E, F (A, B)	PHOSPHOAMINOPHOSPHONIC ACID-ADENYLATE ESTER	non-polymer		506.2	2	Chemie (ANP)
4	G, H (A, B)	water	water		18.0	13	Chemie (HOH)

Sequence modifications

A, B: 352 - 354 (PDB: 2CH4)
A, B: 355 - 671 (UniProt: Q56310)

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	105057.9
Non-Polymers*	Number of molecules	2
	Total formula weight	1012.4
All*	Total formula weight	106070.3

*Water molecules are not included.