Zeifman AA, Novikov FN, Stroylov VS, Stroganov OV, Chilov GG, Skoblov AY, Miroshnikov AI, Skoblov YS. 2,3-Dihydroxy-quinoxaline induces ATPase activity of
Herpes Simplex Virus thymidine kinase.
FEBS Lett 2014;
588:509-11. [PMID:
24374341 DOI:
10.1016/j.febslet.2013.12.017]
[Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2013] [Accepted: 12/06/2013] [Indexed: 11/17/2022]
Abstract
2,3-Dihydroxy-quinoxaline, a small molecule that promotes ATPase catalytic activity of Herpes Simplex Virus thymidine kinase (HSV-TK), was identified by virtual screening. This compound competitively inhibited HSV-TK catalyzed phosphorylation of acyclovir with Ki=250 μM (95% CI: 106-405 μM) and dose-dependently increased the rate of the ATP hydrolysis with KM=112 μM (95% CI: 28-195 μM). The kinetic scheme consistent with this experimental data is proposed.
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