PDBe 1kb4

X-ray diffraction
2.8Å resolution

Crystal Structure of VDR DNA-binding Domain Bound to a Canonical Direct Repeat with Three Base Pair Spacer (DR3) Response Element


Function and Biology Details

Biochemical function:
Cellular component:

Structure analysis Details

Assembly composition:
hetero tetramer (preferred)
Entry contents:
1 distinct polypeptide molecule
2 distinct DNA molecules
Macromolecules (3 distinct):
Vitamin D3 receptor Chains: A, B
Molecule details ›
Chains: A, B
Length: 110 amino acids
Theoretical weight: 12.95 KDa
Source organism: Homo sapiens
Expression system: Escherichia coli BL21(DE3)
  • Canonical: P11473 (Residues: 16-125; Coverage: 26%)
Gene names: NR1I1, VDR
Sequence domains: Zinc finger, C4 type (two domains)
Structure domains: Erythroid Transcription Factor GATA-1, subunit A
Molecule details ›
Chain: C
Length: 18 nucleotides
Theoretical weight: 5.53 KDa
Source organism: Synthetic construct
Expression system: Not provided
Molecule details ›
Chain: D
Length: 18 nucleotides
Theoretical weight: 5.5 KDa
Source organism: Synthetic construct
Expression system: Not provided

Ligands and Environments

1 bound ligand:

No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: APS BEAMLINE 19-BM
Spacegroup: P43212
Unit cell:
a: 61.5Å b: 61.5Å c: 241.97Å
α: 90° β: 90° γ: 90°
R R work R free
0.214 0.214 0.272
Expression systems:
  • Escherichia coli BL21(DE3)
  • Not provided