Figure 1.
AZ3146, a novel Mps1 inhibitor. (A) AZ3146 (AZ) is shown. (B) In vitro kinase assay measuring the ability of Mps1Cat to phosphorylate myelin basic protein (MBP). (C) In vitro kinase assays measuring the activity of Mps1 immunoprecipitated from nocodazole-arrested HeLa cells. (D) Dose–response curve showing inhibition of Mps1Cat by AZ3146. (E) Activity of AZ3146 against a kinase panel. (F) Phos tag immunoblot of Mps1 isolated from interphase cells or nocodazole-arrested cells treated with MG132 ± 2 µM AZ3146 for 2 h. Arrowhead, major band; asterisk, minor band. Error bars indicate SEM derived from three experiments.