3n23

X-ray diffraction
4.6Å resolution

Crystal structure of the high affinity complex between ouabain and the E2P form of the sodium-potassium pump

Released:

Function and Biology Details

Structure analysis Details

Assembly composition:
hetero trimer (preferred)
PDBe Complex ID:
PDB-CPX-138328 (preferred)
Entry contents:
3 distinct polypeptide molecules
Macromolecules (3 distinct):
Sodium/potassium-transporting ATPase subunit alpha-1 Chains: A, C
Molecule details ›
Chains: A, C
Length: 992 amino acids
Theoretical weight: 109.67 KDa
Source organism: Sus scrofa
UniProt:
  • Canonical: P05024 (Residues: 30-1021; Coverage: 97%)
Gene name: ATP1A1
Sequence domains:
Sodium/potassium-transporting ATPase subunit beta-1 Chains: B, D
Molecule details ›
Chains: B, D
Length: 277 amino acids
Theoretical weight: 32.13 KDa
Source organism: Sus scrofa
UniProt:
  • Canonical: P05027 (Residues: 27-303; Coverage: 91%)
Gene name: ATP1B1
Sequence domains: Sodium / potassium ATPase beta chain
FXYD domain-containing ion transport regulator Chains: E, G
Molecule details ›
Chains: E, G
Length: 31 amino acids
Theoretical weight: 3.47 KDa
Source organism: Sus scrofa
UniProt:
  • Canonical: Q58K79 (Residues: 17-47; Coverage: 48%)
Gene name: FXYD2
Sequence domains: ATP1G1/PLM/MAT8 family

Ligands and Environments

2 bound ligands:
1 modified residue:

Experiments and Validation Details

Entry percentile scores
X-ray source: ESRF BEAMLINE ID29
Spacegroup: P212121
Unit cell:
a: 117.16Å b: 118.93Å c: 494.1Å
α: 90° β: 90° γ: 90°
R-values:
R R work R free
0.273 0.272 0.302