PDBe 1bl8

X-ray diffraction
3.2Å resolution

POTASSIUM CHANNEL (KCSA) FROM STREPTOMYCES LIVIDANS

Released:

Function and Biology Details

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

Structure analysis Details

Assembly composition:
homo tetramer (preferred)
Entry contents:
1 distinct polypeptide molecule
Macromolecule:
pH-gated potassium channel KcsA Chains: A, B, C, D
Molecule details ›
Chains: A, B, C, D
Length: 97 amino acids
Theoretical weight: 10.25 KDa
Source organism: Streptomyces lividans
Expression system: Escherichia coli
UniProt:
  • Canonical: P0A334 (Residues: 23-119; Coverage: 61%)
Gene names: kcsA, skc1
Sequence domains: Ion channel
Structure domains: Helix Hairpins

Ligands and Environments

1 bound ligand:

No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: CHESS BEAMLINE A1
Spacegroup: C2
Unit cell:
a: 128.78Å b: 68.93Å c: 112.04Å
α: 90° β: 124.63° γ: 90°
R-values:
R R work R free
0.28 0.28 0.29
Expression system: Escherichia coli