PDBe 3i6w

X-ray diffraction
3.25Å resolution

Structure and Activation Mechanism of the CHK2 DNA-Damage Checkpoint Kinase

Source organism: Homo sapiens

Function and Biology Details

Reaction catalysed:
ATP + a protein = ADP + a phosphoprotein
Biochemical function:
Biological process:
Cellular component:
  • not assigned

Structure analysis Details

Assembly composition:
homo dimer (preferred)
Entry contents:
1 distinct polypeptide molecule
Serine/threonine-protein kinase Chk2 Chains: A, B, C, D, E, F, G, H
Molecule details ›
Chains: A, B, C, D, E, F, G, H
Length: 443 amino acids
Theoretical weight: 50.84 KDa
Source organism: Homo sapiens
Expression system: Escherichia coli
  • Canonical: O96017 (Residues: 70-512; Coverage: 82%)
  • Best match: O96017-5 (Residues: 70-198)
Gene names: CDS1, CHEK2, CHK2, RAD53
Sequence domains:
Structure domains:

Ligands and Environments

No bound ligands

No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: APS BEAMLINE 24-ID-E
Spacegroup: P1
Unit cell:
a: 76.2Å b: 114.7Å c: 123Å
α: 84.1° β: 81.2° γ: 80.7°
R R work R free
0.252 0.251 0.287
Expression system: Escherichia coli