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Function
Choline kinase (CK) catalyzes the conversion of choline and ATP to phosphocholine and ADP. CK is part of phosphatidylcholine biosynthesis.
Disease
Overexpression of CK α1 was found in various types of cancer cells. This can aid in promoting cancer cells survival and growth. CK α1 is used as cancer biomarker and anticancer drug target.
Relevance
Structural highlights
The choline binds to CK in a deep hydrophobic groove (PDB code 2ckq; Hydrophobic, Polar) and the ADP binds in a cleft (PDB code 2ckp). [1]
- ↑ Malito E, Sekulic N, Too WC, Konrad M, Lavie A. Elucidation of human choline kinase crystal structures in complex with the products ADP or phosphocholine. J Mol Biol. 2006 Nov 24;364(2):136-51. Epub 2006 Sep 3. PMID:17007874 doi:10.1016/j.jmb.2006.08.084
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3D structures of choline kinase
Updated on 13-February-2019
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- Choline kinase
- 2ckq – hCK α – human
- 2ckp – hCK α2
- 2ig7 – hCK β
- 1nw1 – CK – Caenorhabditis elegans
- 3c5i – CK – Plasmodium knowlesi
- 3fi8 – CK – Plasmodium falciparum
- 3mes – CK – Cryptosporidium pavrum
- 4r77 – SpCK – Streptococcus pneumoniae
- Choline kinase complexes
- 2ckp – hCK α2 + ADP
- 2ckq – hCK α2 + phosphocholine
- 3zm9, 4da5, 4br3, 5afv, 5eqe, 5eqp, 5eqy, 5ftg, 5fut – hCK α + inhibitor
- 3f2r – hCK α + hemicholinium-3
- 3g15 – hCK α + hemicholinium-3 + ADP
- 3lq3, 3feg – hCK β + hemicholinium-3 + ADP
- 4cg8, 4cg9, 4cga – hCK α1 + bispyridinium derivative
- 4r78 – SpCK + AMP
- 4r7b – SpCK + choline
References
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