› 2ahz

X-ray diffraction
2.8Å resolution

K+ complex of the NaK Channel

Released:
DOI: 10.2210/pdb2ahz/pdb
PDB entry 2ahz coloured by chain, front view.
PDB entry 2ahz coloured by chain, side view.
PDB entry 2ahz coloured by chain, top view.
Source organism: Bacillus cereus
Primary publication:
Atomic structure of a Na+- and K+-conducting channel.
Shi N, Ye S, Alam A, Chen L, Jiang Y
Nature 440 570-4 (2006)
PMID: 16467789

Function and Biology Details

Biochemical function:
Biological process:
Cellular component:
Sequence domains:

Structure analysis Details

Assembly composition:
homo tetramer (preferred)
Assembly name:
PDBe Complex ID:
PDB-CPX-182541 (preferred)
Entry contents:
1 distinct polypeptide molecule
Macromolecule:
Potassium channel domain-containing protein Chains: A, B
Molecule details ›
Chains: A, B
Length: 110 amino acids
Theoretical weight: 12.36 KDa
Source organism: Bacillus cereus
Expression system: Escherichia coli
UniProt:
  • Canonical: Q81HW2 (Residues: 1-110; Coverage: 97%)
Gene name: BC_0669
Sequence domains: Ion channel
Structure domains: Helix Hairpins

Ligands and Environments

2 bound ligands:
Ligand K 4 x K
Ligand CA 1 x CA
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: APS BEAMLINE 19-BM
Spacegroup: C2221
Unit cell:
a: 82.203Å b: 85.541Å c: 129.608Å
α: 90° β: 90° γ: 90°
R-values:
R R work R free
0.241 0.241 0.28
Expression system: Escherichia coli

Quick links

Citations

31 review citations

Hyperpolarization-activated cation channels: from genes to function.
Biel et al. (2009)
30 more

7 mentions without citation

Structures of the Human HCN1 Hyperpolarization-Activated Channel.
Lee et al. (2017)
6 more