1uf9
Crystal structure of TT1252 from Thermus thermophilusCrystal structure of TT1252 from Thermus thermophilus
Structural highlights
FunctionCOAE_THET8 Catalyzes the phosphorylation of the 3'-hydroxyl group of dephosphocoenzyme A to form coenzyme A (By similarity). 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 PubMedDephosphocoenzyme A kinase (DCK) catalyzes phosphorylation in the final step of coenzyme A (CoA) biosynthesis. In this phosphorylation process, domain movements play a very important role. To reveal the structural changes induced by ligand binding, we determined the crystal structure of DCK from Thermus thermophilus HB8 by the multiwavelength anomalous dispersion method at 2.8 A. The crystal structure includes three independent protein molecules in the asymmetric unit: One is a liganded form and the others are unliganded. The topology shows a canonical nucleotide-binding protein possessing the P-loop motif. A structure homology search by DALI revealed the similarity of the DCKs from T. thermophilus HB8, Haemophilus influenzae, and Escherichia coli. Structural comparisons between the liganded and unliganded forms of DCK from T. thermophilus HB8 indicated domain movements induced by adenosine triphosphate (ATP) binding. For the domain movements, proline residues confer flexibility at the domain linkages. In particular, Pro91 plays an important role in moving the CoA domain. ATP-induced structural change of dephosphocoenzyme A kinase from Thermus thermophilus HB8.,Seto A, Murayama K, Toyama M, Ebihara A, Nakagawa N, Kuramitsu S, Shirouzu M, Yokoyama S Proteins. 2005 Jan 1;58(1):235-42. PMID:15526298[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. References
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