PDBe 2ckp

X-ray diffraction
3.1Å resolution

Crystal structure of Human Choline Kinase alpha-2 in complex with 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: 390 amino acids
Theoretical weight: 45.38 KDa
Source organism: Homo sapiens
Expression system: Escherichia coli
  • Canonical: P35790 (Residues: 50-457; Coverage: 85%)
  • Best match: P35790-2 (Residues: 50-439)
Gene names: CHK, CHKA, CKI
Structure domains:

Ligands and Environments

1 bound ligand:

No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: APS BEAMLINE 22-ID
Spacegroup: P212121
Unit cell:
a: 52.271Å b: 127.137Å c: 158.742Å
α: 90° β: 90° γ: 90°
R R work R free
0.263 0.256 0.329
Expression system: Escherichia coli