3ATP

Structure of the ligand binding domain of the bacterial serine chemoreceptor Tsr with ligand

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)	Methyl-accepting chemotaxis protein I	polymer	170	19020.0	2	UniProt (P02942) Pfam (PF02203)	Escherichia coli	MCP-I, Serine chemoreceptor protein
2	C, D (A, B)	SERINE	non-polymer		105.1	2	Chemie (SER)
3	E, F (A, B)	water	water		18.0	59	Chemie (HOH)

Sequence modifications

A, B: 25 - 190 (UniProt: P02942)

PDB	External Database	Details
Gly 21	-	expression tag
Pro 22	-	expression tag
Leu 23	-	expression tag
Gly 24	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	38039.9
Non-Polymers*	Number of molecules	2
	Total formula weight	210.2
All*	Total formula weight	38250.1

*Water molecules are not included.