PDBe 2fy8

X-ray diffraction
2.79Å resolution

Crystal structure of MthK rck domain in its ligand-free gating-ring form


Function and Biology Details

Structure analysis Details

Assembly composition:
homo octamer (preferred)
Entry contents:
1 distinct polypeptide molecule
Calcium-gated potassium channel MthK Chains: A, B, C, D, E, F, G, H
Molecule details ›
Chains: A, B, C, D, E, F, G, H
Length: 230 amino acids
Theoretical weight: 25.45 KDa
Source organism: Methanothermobacter thermautotrophicus
Expression system: Escherichia coli
  • Canonical: O27564 (Residues: 107-336; Coverage: 69%)
Gene names: MTH_1520, mthK
Sequence domains:
Structure domains:

Ligands and Environments

No bound ligands

No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: APS BEAMLINE 19-ID
Spacegroup: C2221
Unit cell:
a: 174.141Å b: 180.965Å c: 252.748Å
α: 90° β: 90° γ: 90°
R R work R free
0.213 0.212 0.254
Expression system: Escherichia coli