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  Nonenantioselectivity property of human deoxycytidine kinase explained by structures of the enzyme in complex with L- and D-Nucleosides

Sabini, E., Hazra, S., Konrad, M., & Lavie, A. (2007). Nonenantioselectivity property of human deoxycytidine kinase explained by structures of the enzyme in complex with L- and D-Nucleosides. Journal of Medicinal Chemistry, 50(13), 3004-3014. doi:10.1021/jm0700215.

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Datensatz-Permalink: https://hdl.handle.net/11858/00-001M-0000-0012-E0DC-C Versions-Permalink: https://hdl.handle.net/11858/00-001M-0000-002A-CD17-E
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 Urheber:
Sabini, E., Autor
Hazra, S., Autor
Konrad, M.1, Autor           
Lavie, A., Autor
Affiliations:
1Research Group of Enzyme Biochemistry, MPI for biophysical chemistry, Max Planck Society, ou_578612              

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 Zusammenfassung: Biological molecules are predominantly enantioselective. Yet currently two nucleoside analogue prodrugs (3TC and FTC) with opposite chirality compared to physiological nucleosides are clinically approved for the treatment of HIV infections. These prodrugs require conversion to their triphosphorylated forms to achieve pharmacological activity. The first step in the activation of these agents is catalyzed by human deoxycytidine kinase (dCK). This enzyme possesses the ability to phosphorylate nucleosides of the unnatural l-chirality. To understand the molecular basis for the nonenantioselectivity of dCK, we solved the crystal structures of the enzyme in complex with the l-enantiomer and of its physiological substrate deoxycytidine and with the l-nucleoside analogue FTC. These were compared to a structure solved with d-dC. Our results highlight structural adjustments imposed on the l-nucleosides and properties of the enzyme endowing it with the ability to phosphorylate substrates with nonphysiological chirality. This work reveals the molecular basis for the activation of l-nucleosides by dCK.

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Sprache(n): eng - English
 Datum: 2007-05-272007-06-28
 Publikationsstatus: Erschienen
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 Art der Begutachtung: Expertenbegutachtung
 Identifikatoren: DOI: 10.1021/jm0700215
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Titel: Journal of Medicinal Chemistry
Genre der Quelle: Zeitschrift
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Seiten: - Band / Heft: 50 (13) Artikelnummer: - Start- / Endseite: 3004 - 3014 Identifikator: -