X-ray diffraction
2.11Å resolution

Crystal structure of ligand-binding domain of estrogen-related receptor alpha (ERRalpha) in complex with the peroxisome proliferators-activated receptor coactivator-1alpha box3 peptide (PGC-1alpha)


Function and Biology Details

Biochemical function:
  • not assigned
Biological process:
  • not assigned
Cellular component:
  • not assigned

Structure analysis Details

Assemblies composition:
hetero tetramer
hetero dimer (preferred)
Entry contents:
2 distinct polypeptide molecules
Macromolecules (2 distinct):
Steroid hormone receptor ERR1 Chains: A, C
Molecule details ›
Chains: A, C
Length: 253 amino acids
Theoretical weight: 27.58 KDa
Source organism: Homo sapiens
Expression system: Escherichia coli BL21(DE3)
  • Canonical: P11474 (Residues: 192-423; Coverage: 55%)
Gene names: ERR1, ESRL1, ESRRA, NR3B1
Sequence domains: Ligand-binding domain of nuclear hormone receptor
Structure domains: Retinoid X Receptor
Peroxisome proliferator-activated receptor gamma coactivator 1-alpha Chains: B, D
Molecule details ›
Chains: B, D
Length: 22 amino acids
Theoretical weight: 2.67 KDa
Source organism: Homo sapiens
Expression system: Not provided
  • Canonical: Q9UBK2 (Residues: 198-219; Coverage: 3%)
Gene names: LEM6, PGC1, PGC1A, PPARGC1, PPARGC1A

Ligands and Environments

No bound ligands
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: ESRF BEAMLINE ID14-2
Spacegroup: C2
Unit cell:
a: 119.4Å b: 56Å c: 96.2Å
α: 90° β: 106.4° γ: 90°
R R work R free
0.212 0.212 0.255
Expression systems:
  • Escherichia coli BL21(DE3)
  • Not provided