8XMI

Potassium transporter KtrAB from Bacillus subtilis in ATP-bound state with addition of EDTA and EGTA, C1 symmetry

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...	Ktr system potassium uptake protein A	polymer	222	24916.8	8	UniProt (O32080) Pfam (PF02254) Pfam (PF02080) In PDB	Bacillus subtilis	K(+)-uptake protein KtrA
2	I, J, K, L	Ktr system potassium uptake protein B	polymer	445	48471.5	4	UniProt (O32081) Pfam (PF02386) In PDB	Bacillus subtilis	K(+)-uptake protein KtrB
3	A, B, C, D, E...	ADENOSINE-5'-TRIPHOSPHATE	non-polymer		507.2	8	Chemie (ATP)
4	B, C, F, G	SODIUM ION	non-polymer		23.0	4	Chemie (NA)
5	K, L, I, J	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	16
	Total formula weight	4305.8
All*	Total formula weight	397526.0

*Water molecules are not included.