PDBe 4iby

X-ray diffraction
1.45Å resolution

Human p53 core domain with hot spot mutation R273H and second-site suppressor mutation S240R


Function and Biology Details

Structure analysis Details

Assembly composition:
monomeric (preferred)
Entry contents:
1 distinct polypeptide molecule
Cellular tumor antigen p53 Chains: A, B
Molecule details ›
Chains: A, B
Length: 200 amino acids
Theoretical weight: 22.56 KDa
Source organism: Homo sapiens
Expression system: Escherichia coli BL21(DE3)
  • Canonical: P04637 (Residues: 94-293; Coverage: 51%)
Gene names: P53, TP53
Sequence domains: P53 DNA-binding domain
Structure domains: Immunoglobulin-like

Ligands and Environments

2 bound ligands:

No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: ESRF BEAMLINE ID14-3
Spacegroup: P21
Unit cell:
a: 43.524Å b: 69.212Å c: 67.195Å
α: 90° β: 96.61° γ: 90°
R R work R free
0.171 0.169 0.2
Expression system: Escherichia coli BL21(DE3)