X-ray diffraction
3.11Å resolution

Crystal Structures of MthK RCK gating ring bound to Barium


Function and Biology Details

Structure analysis Details

Assembly composition:
monomeric (preferred)
Entry contents:
1 distinct polypeptide molecule
Calcium-gated potassium channel MthK Chains: A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P
Molecule details ›
Chains: A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P
Length: 242 amino acids
Theoretical weight: 26.89 KDa
Source organism: Methanothermobacter thermautotrophicus str. Delta H
Expression system: Escherichia coli
  • Canonical: O27564 (Residues: 107-336; Coverage: 69%)
Gene names: MTH_1520, mthK
Sequence domains:
Structure domains:

Ligands and Environments

1 bound ligand:

No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: NSLS BEAMLINE X6A
Spacegroup: P212121
Unit cell:
a: 110.045Å b: 136.419Å c: 498.427Å
α: 90° β: 90° γ: 90°
R R work R free
0.209 0.209 0.242
Expression system: Escherichia coli