1nw1
Crystal Structure of Choline KinaseCrystal Structure of Choline Kinase
Structural highlights1nw1 is a 2 chain structure with sequence from Caeel. Full crystallographic information is available from OCA. Ligands: Evolutionary Conservation Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf. Publication Abstract from PubMedCholine kinase catalyzes the ATP-dependent phosphorylation of choline, the first committed step in the CDP-choline pathway for the biosynthesis of phosphatidylcholine. The 2.0 A crystal structure of a choline kinase from C. elegans (CKA-2) reveals that the enzyme is a homodimeric protein with each monomer organized into a two-domain fold. The structure is remarkably similar to those of protein kinases and aminoglycoside phosphotransferases, despite no significant similarity in amino acid sequence. Comparisons to the structures of other kinases suggest that ATP binds to CKA-2 in a pocket formed by highly conserved and catalytically important residues. In addition, a choline binding site is proposed to be near the ATP binding pocket and formed by several structurally flexible loops. The crystal structure of choline kinase reveals a eukaryotic protein kinase fold.,Peisach D, Gee P, Kent C, Xu Z Structure. 2003 Jun;11(6):703-13. PMID:12791258[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. References |
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