Bafilomycin C1 is a selective, reversible inhibitor of vacuolar H+-ATPases (V-ATPases). It blocks these pumps in mammalian, plant, or fungal cells, preventing proton transport and compartment acidification. Bafilomycin C1 has been shown to have angiostatic activity in the chick chorioallantoic membrane assay. It has also been used, when coupled to cellulose, to purify V-ATPases.
