PDBe 4ibu

X-ray diffraction
1.7Å resolution

Human p53 core domain with hot spot mutation R273C and second-site suppressor mutation T284R in sequence-specific complex with DNA

Released:

Function and Biology Details

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

Structure analysis Details

Assembly composition:
hetero octamer (preferred)
Entry contents:
1 distinct polypeptide molecule
1 distinct DNA molecule
Macromolecules (2 distinct):
Cellular tumor antigen p53 Chains: A, B, C, D
Molecule details ›
Chains: A, B, C, D
Length: 200 amino acids
Theoretical weight: 22.51 KDa
Source organism: Homo sapiens
Expression system: Escherichia coli BL21(DE3)
UniProt:
  • Canonical: P04637 (Residues: 94-293; Coverage: 51%)
Gene names: P53, TP53
Sequence domains: P53 DNA-binding domain
Structure domains: Immunoglobulin-like
DNA (5'-D(*CP*GP*GP*GP*CP*AP*TP*GP*CP*CP*CP*G)-3') Chains: E, F, G, H
Molecule details ›
Chains: E, F, G, H
Length: 12 nucleotides
Theoretical weight: 3.66 KDa
Source organism: Homo sapiens
Expression system: Not provided

Ligands and Environments

3 bound ligands:

No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: ESRF BEAMLINE ID14-2
Spacegroup: P1
Unit cell:
a: 54.537Å b: 58.158Å c: 77.968Å
α: 82.96° β: 87.78° γ: 73.57°
R-values:
R R work R free
0.164 0.163 0.197
Expression systems:
  • Escherichia coli BL21(DE3)
  • Not provided