PDBe 3g15

X-ray diffraction
1.7Å resolution

Crystal structure of human choline kinase alpha in complex with hemicholinium-3 and ADP


Function and Biology Details

Reactions catalysed:
ATP + choline = ADP + phosphocholine. 
ATP + ethanolamine = ADP + O-phosphoethanolamine. 
Biochemical function:
  • not assigned
Biological process:
  • not assigned
Cellular component:
  • not assigned

Structure analysis Details

Assembly composition:
homo dimer (preferred)
Entry contents:
1 distinct polypeptide molecule
Choline kinase alpha Chains: A, B
Molecule details ›
Chains: A, B
Length: 401 amino acids
Theoretical weight: 46.86 KDa
Source organism: Homo sapiens
Expression system: Escherichia coli
  • Canonical: P35790 (Residues: 75-457; Coverage: 84%)
Gene names: CHK, CHKA, CKI
Sequence domains: Choline/ethanolamine kinase
Structure domains: Aminoglycoside 3'-phosphotransferase; Chain: A, domain 2

Ligands and Environments

No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: APS BEAMLINE 23-ID-B
Spacegroup: P212121
Unit cell:
a: 55.802Å b: 118.986Å c: 131.039Å
α: 90° β: 90° γ: 90°
R R work R free
0.221 0.22 0.257
Expression system: Escherichia coli