8K1S

Potassium transporter KtrAB from Bacillus subtilis in ADP-bound state

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B, C, D, E... (A, B, C, D, E...)	Ktr system potassium uptake protein A	polymer	222	24916.8	8	UniProt (O32080) Pfam (PF02254) Pfam (PF02080)	Bacillus subtilis	K(+)-uptake protein KtrA
2	I, J, K, L (I, J, K, L)	Ktr system potassium uptake protein B	polymer	445	48471.5	4	UniProt (O32081) Pfam (PF02386)	Bacillus subtilis	K(+)-uptake protein KtrB
3	M, N, O, P, Q... (A, B, C, D, E...)	ADENOSINE-5'-DIPHOSPHATE	non-polymer		427.2	8	Chemie (ADP)
4	U, V, W, X (I, J, K, L)	POTASSIUM ION	non-polymer		39.1	4	Chemie (K)

Contents of the asymmetric unit

Polymers	Number of chains	12
	Total formula weight	393220.2
Non-Polymers*	Number of molecules	12
	Total formula weight	3574.0
All*	Total formula weight	396794.2

*Water molecules are not included.