New evidences for a regulation of deoxycytidine kinase activity by reversible phosphorylation.

Smal, Caroline;Bertrand, Luc;Van Den Neste, Eric;Cardoen, S;Bontemps, Françoise;et.al.
(2004) Nucleosides, nucleotides & nucleic acids — Vol. 23, n° 8-9, p. 1363-1365 (2004)

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Authors
  • Smal, CarolineUCLouvain
    Author
  • Bertrand, LucUCLouvain
    Author
  • Author
  • Cardoen, SUCLouvain
    Author
  • Author
  • Marie, S.UCLouvain
    Author
  • Race, VUCLouvain
    Author
  • Ferrant, AugustinUCLouvain
    Author
  • Van den Berghe, GeorgesUCLouvain
    Author
  • Bontemps, FrançoiseUCLouvain
    Author
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Abstract
Recent studies indicate that deoxycytidine kinase (dCK), which activates various nucleoside analogues used in antileukemic therapy, can be regulated by post-translational modification, most probably through reversible phosphorylation. To further unravel its regulation, dCK was overexpressed in HEK-293 cells as a His-tag fusion protein. Western blot analysis showed that purified overexpressed dCK appears as doublet protein bands. The slower band disappeared after treatment with protein phosphatase lambda (PP lambda) in parallel with a decrease of dCK activity, providing additional arguments in favor of both phosphorylated and unphosphorylated forms of dCK.
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Citations

Smal, C., Bertrand, L., Van Den Neste, E., Cardoen, S., Veiga da Cunha, M., Marie, S., Race, V., Ferrant, A., Van den Berghe, G., & Bontemps, F. (2004). New evidences for a regulation of deoxycytidine kinase activity by reversible phosphorylation. Nucleosides, nucleotides & nucleic acids, 23(8-9), 1363-1365. https://doi.org/10.1081/NCN-200027620 (Original work published 2004)