Inhibition of Streptococcus pneumoniae adenylate kinase by some 5-arylidene-thiazolidin-4-on-2-thione derivates
Mihaela I. Ionescu, Adriana Z. Costache, Ovidiu Oniga, HoriaL. Banciu, Iulia Lupan
Abstract: Adenylat kinase is an ubiquitous enzyme found in prokaryotes and eukaryotes. In the present study we examined the inhibition of Streptococcus pneumoniae adenylate kinase (AKSP) by six 5-arylidene-thiazolidin-4-on-2-thione derivates using 2, 4-dinitrophenylhydrazine colorimetric assay. Inhibition of AKSP activity with synthetic compounds was performed against recombinant enzyme over-expressed in E. coli. The compound C10H6BrNOS2 with the bromine atom in –ortho position has shown the most efficient inhibitory activity; I50 value (the inhibitor concentration that leads to 50% activity inhibition) was 0.067mM.
Keywords: adenylate kinase,5-arylidene-thiazolidin-4-on-2-thione derivates,inhibitory activity
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