X-ray diffraction
3Å resolution

Square-shaped octameric ring structure of an RCK domain with ATP bound


Function and Biology Details

Biochemical function:
  • not assigned
Biological process:
  • not assigned
Cellular component:
  • not assigned

Structure analysis Details

Assembly composition:
homo octamer (preferred)
Entry contents:
1 distinct polypeptide molecule
Ktr system potassium uptake protein A Chains: A, B
Molecule details ›
Chains: A, B
Length: 144 amino acids
Theoretical weight: 16.08 KDa
Source organism: Bacillus subtilis
Expression system: Escherichia coli BL21(DE3)
  • Canonical: O32080 (Residues: 1-144; Coverage: 65%)
Gene names: BSU31090, ktrA, yuaA
Sequence domains: TrkA-N domain
Structure domains: NAD(P)-binding Rossmann-like Domain

Ligands and Environments

1 bound ligand:
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: NSLS BEAMLINE X25
Spacegroup: I422
Unit cell:
a: 126.28Å b: 126.28Å c: 98.612Å
α: 90° β: 90° γ: 90°
R R work R free
0.268 0.264 0.303
Expression system: Escherichia coli BL21(DE3)