4j7c

X-ray diffraction
3.5Å resolution

KtrAB potassium transporter from Bacillus subtilis

Released:

Function and Biology Details

Structure analysis Details

Assemblies composition:
hetero decamer (preferred)
hetero dodecamer
PDBe Complex ID:
PDB-CPX-128410 (preferred)
Entry contents:
2 distinct polypeptide molecules
Macromolecules (2 distinct):
Ktr system potassium uptake protein A Chains: A, B, C, D, E, F, G, H
Molecule details ›
Chains: A, B, C, D, E, F, G, H
Length: 222 amino acids
Theoretical weight: 24.91 KDa
Source organism: Bacillus subtilis subsp. subtilis str. 168
Expression system: Escherichia coli
UniProt:
  • Canonical: O32080 (Residues: 1-222; Coverage: 100%)
Gene names: BSU31090, ktrA, yuaA
Sequence domains:
Structure domains:
Ktr system potassium uptake protein B Chains: I, J, K, L
Molecule details ›
Chains: I, J, K, L
Length: 465 amino acids
Theoretical weight: 50.64 KDa
Source organism: Bacillus subtilis subsp. subtilis str. 168
Expression system: Escherichia coli
UniProt:
  • Canonical: O32081 (Residues: 1-445; Coverage: 100%)
Gene names: BSU31100, ktrB, yubG
Sequence domains: Cation transport protein

Ligands and Environments

2 bound ligands:
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: ESRF BEAMLINE ID14-1
Spacegroup: P21
Unit cell:
a: 146.52Å b: 140.19Å c: 153.93Å
α: 90° β: 105.69° γ: 90°
R-values:
R R work R free
0.259 0.258 0.273
Expression system: Escherichia coli