2008 Volume 72 Issue 10 Pages 2521-2525
A two-component system (TCS) comprising a histidine kinase (HK) sensor and a response regulator (RR) plays important roles in regulating the virulence of many pathogenic bacteria. We used a new screening method to isolate novel inhibitor Art1 against bacterial sensory HK from an acetone extract of solid cultures of Articulospora sp., an aquatic hypomycete. Art1 inhibited the ATP-dependent autophosphorylation of recombinant glutathione S-transferase-fusion protein SasA, a cyanobacterial HK, with an IC50 value of 9.5 μg/ml.
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