Potent inhibition of cyclic diadenylate monophosphate cyclase by the antiparasitic drug, suramin

C-di-AMP synthases are essential in several bacteria, including human pathogens; hence these enzymes are potential antibiotic targets. However, there is a dearth of small molecule inhibitors of c-di-AMP metabolism enzymes. Screening of 2000 known drugs against DisA has led to the identification of suramin, an antiparasitic drug as potent inhibitor of c-di-AMP synthase.