5j03

X-ray diffraction
2Å resolution

Crystal Structure of a chimeric Kv7.2 - Kv7.3 proximal C-terminal Domain in Complex with Calmodulin

Released:
Source organism: Homo sapiens

Function and Biology Details

Structure analysis Details

Assembly composition:
hetero dimer (preferred)
PDBe Complex ID:
PDB-CPX-242838 (preferred)
Entry contents:
2 distinct polypeptide molecules
Macromolecules (2 distinct):
Potassium voltage-gated channel subfamily KQT member 2; Potassium voltage-gated channel subfamily KQT member 3 Chain: A
Molecule details ›
Chain: A
Length: 110 amino acids
Theoretical weight: 13.07 KDa
Source organism: Homo sapiens
Expression system: Escherichia coli
UniProt:
  • Canonical: O43526 (Residues: 315-333; Coverage: 2%)
  • Canonical: O43525 (Residues: 373-409; Coverage: 4%)
Gene names: KCNQ2, KCNQ3
Calmodulin-1 Chain: B
Molecule details ›
Chain: B
Length: 149 amino acids
Theoretical weight: 16.85 KDa
Source organism: Homo sapiens
Expression system: Escherichia coli
UniProt:
  • Canonical: P0DP23 (Residues: 1-149; Coverage: 100%)
Gene names: CALM, CALM1, CAM, CAM1
Sequence domains: EF-hand domain pair

Ligands and Environments

2 bound ligands:
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: ESRF BEAMLINE ID23-2
Spacegroup: P3121
Unit cell:
a: 47.665Å b: 47.665Å c: 182.216Å
α: 90° β: 90° γ: 120°
R-values:
R R work R free
0.181 0.179 0.228
Expression system: Escherichia coli