PDBe 2qhn

X-ray diffraction
1.7Å resolution

Crystal Structure of Chek1 in Complex with Inhibitor 1a


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:
monomeric (preferred)
Entry contents:
1 distinct polypeptide molecule
Serine/threonine-protein kinase Chk1 Chain: A
Molecule details ›
Chain: A
Length: 323 amino acids
Theoretical weight: 36.92 KDa
Source organism: Homo sapiens
Expression system: Spodoptera frugiperda
  • Canonical: O14757 (Residues: 1-307; Coverage: 65%)
Gene names: CHEK1, CHK1
Sequence domains: Protein kinase domain
Structure domains:

Ligands and Environments

1 bound ligand:

No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: RIGAKU MICROMAX-007
Spacegroup: P21
Unit cell:
a: 45.14Å b: 65.68Å c: 58.23Å
α: 90° β: 94.55° γ: 90°
R R work R free
0.203 0.202 0.23
Expression system: Spodoptera frugiperda