a, Effects of mutation in STRIP1 on STRIPAK formation. Control or STRIP1 KO 293A cells were transfected with mock vector, FLAG-STRIP1 WT or ΔCTT mutant plasmid as indicated. Lysates and FLAG IPs were subjected to immunoblotting. b, Immunoblot of lysates of control or STRIP1 KO 293A cells transfected with mock vector, STRIP1 WT or ΔCTT mutant plasmid as indicated. HM indicates hydrophobic motif in LATS1/2. c, Quantification of the ratios of phospho- and total proteins in c. d, Immunofluorescence staining of YAP localization in 293A control or STRIP1 KO cells transfected with mock vector, STRIP1 WT or ΔCTT mutant plasmids. Scale bar, 10 μm.