PDBe 3pa4

X-ray diffraction
1.59Å resolution

X-ray crystal structure of compound 2a bound to human CHK1 kinase domain

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:
monomeric (preferred)
Entry contents:
1 distinct polypeptide molecule
Serine/threonine-protein kinase Chk1 Chain: A
Molecule details ›
Chain: A
Length: 273 amino acids
Theoretical weight: 31.46 KDa
Source organism: Homo sapiens
Expression system: Spodoptera frugiperda
  • Canonical: O14757 (Residues: 2-274; Coverage: 57%)
Gene names: CHEK1, CHK1
Sequence domains: Protein kinase domain
Structure domains:

Ligands and Environments

2 bound ligands:

No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: CHESS BEAMLINE A1
Spacegroup: P21
Unit cell:
a: 44.92Å b: 65.85Å c: 58.27Å
α: 90° β: 94.93° γ: 90°
R R work R free
0.225 0.225 0.25
Expression system: Spodoptera frugiperda