apoptolidin

Apoptolidin is an apoptosis inducer originally isolated from Nocardiopsis bacteria. It inhibits the mitochondrial F1FO ATPase (Ki = 4-5 μM). Apoptolidin selectively kills transformed glial cells without significantly affecting untransformed cells. It also has antibiotic and antifungal actions.

Isoapoptolidin is a stable derivative of apoptolidin that demonstrates 10-fold reduced F1FO-ATP synthase inhibitory activity compared to apoptolidin (IC50s = 17 and 0.7 μM, respectively).