› 1u4f

X-ray diffraction
2.41Å resolution

Crystal Structure of Cytoplasmic Domains of IRK1 (Kir2.1) channel

Released:
DOI: 10.2210/pdb1u4f/pdb
PDB entry 1u4f coloured by chain, front view.
PDB entry 1u4f coloured by chain, side view.
PDB entry 1u4f coloured by chain, top view.
Source organism: Mus musculus
Primary publication:
Cytoplasmic domain structures of Kir2.1 and Kir3.1 show sites for modulating gating and rectification.
Pegan S, Arrabit C, Zhou W, Kwiatkowski W, Collins A, Slesinger PA, Choe S
Nat Neurosci 8 279-87 (2005)
PMID: 15723059

Function and Biology Details

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

Structure analysis Details

Assemblies composition:
homo tetramer (preferred)
homo octamer
Assembly name:
PDBe Complex ID:
PDB-CPX-152949 (preferred)
Entry contents:
1 distinct polypeptide molecule
Macromolecule:
Inward rectifier potassium channel 2 Chains: A, B, C, D
Molecule details ›
Chains: A, B, C, D
Length: 270 amino acids
Theoretical weight: 30.84 KDa
Source organism: Mus musculus
Expression system: Escherichia coli BL21(DE3)
UniProt:
  • Canonical: P35561 (Residues: 187-428; Coverage: 57%)
Gene names: Irk1, Kcnj2
Sequence domains: Inward rectifier potassium channel C-terminal domain
Structure domains: G protein-activated inward rectifier potassium channel 1

Ligands and Environments

No bound ligands
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: ALS BEAMLINE 8.2.1
Spacegroup: C2221
Unit cell:
a: 112.461Å b: 138.294Å c: 138.745Å
α: 90° β: 90° γ: 90°
R-values:
R R work R free
0.225 0.225 0.281
Expression system: Escherichia coli BL21(DE3)

Quick links

Citations

43 review citations

Inwardly rectifying potassium channels: their structure, function, and physiological roles.
Hibino et al. (2010)
42 more

25 mentions without citation

Structure of potassium channels.
Kuang et al. (2015)
24 more