ML240 is a potent p97 inhibitor, with an IC50 of 100 nM. ML240 is active in the UbG76V-GFP stabilization assay (IC50, 0.9 μM). ML240 inhibits p97 competitively with respect to ATP with a Ki values of 0.22 μM. ML240 also inhibits labeling of only three protein kinase domains by >50% when tested at 20 μM: PIP5 K3 (belongs to phosphoinositide-3 kinase family), JAK1 JH2 (N-terminal pseudokinase domain of JAK1), and DNAPK (DNA-dependent protein kinase). ML240 (1.1, 3.3, 10, or 20 μM) induces executioner caspases 3 and 7 and triggers cell death independently of apical caspases 8 and 9. ML240 is cytotoxic to HCT15 and SW403 cells, with GI50s of 0.76 and 0.5 μM after treatment for 24 h, and 0.54 and 0.5 μM after treatment for 72 h, respectively.
Medlife has not independently confirmed the accuracy of these methods. They are for reference only.