Abstract : Dehydrocurvularin irreversibly inhibits human ATP-citrate lyase. Abstract : Natural-product macrolide 10, 11-dehydrocurvularin (DCV ) was revealed to be a potent irreversible inhibitor of ATP-citrate lyase (ACLY) via classical chemoproteomic profiling, which mechanistically illuminates the anti-cancer mode of action ofDCV and its analogues.