X-ray diffraction
2.85Å resolution

Intermediate gating structure 2 of the inwardly rectifying K+ channel KirBac3.1

Entry authors: Gulbis JM, Kuo A, Smith B, Doyle DA, Edwards A, Arrowsmith C, Sundstrom M

Function and Biology Details

Structure analysis Details

Assembly composition:
homo tetramer (preferred)
Entry contents:
1 distinct polypeptide molecule
Inward rectifier potassium channel Kirbac3.1 Chains: A, B
Molecule details ›
Chains: A, B
Length: 301 amino acids
Theoretical weight: 33.78 KDa
Source organism: Magnetospirillum magnetotacticum
Expression system: Escherichia coli
  • Canonical: D9N164 (Residues: 5-295; Coverage: 99%)
Sequence domains:
Structure domains:

Ligands and Environments

3 bound ligands:
No modified residues

Experiments and Validation Details

Entry percentile scores
Spacegroup: P21212
Unit cell:
a: 105.756Å b: 107.532Å c: 89.654Å
α: 90° β: 90° γ: 90°
R R work R free
0.27 0.27 0.31
Expression system: Escherichia coli