(A) Co-immunoprecipitation (Co-IP) of SRGAP2A-GFP or SRGAP2C-GFP along with HA-SRGAP2C in HEK293T cells transfected with the indicated constructs. Co-IP was performed using mouse anti-HA antibody and mouse IgG as negative control. Western blotting (WB) was performed with a mouse (ms) anti (α)-GFP antibody.
(B–K) Representative confocal images of COS7 cells transfected with indicated constructs and visualized by EGFP signal. Scale bar: 5 µm. Inset shows 2-fold magnification.
(L) Box plot showing quantification of the number of filopodia per pixel along cell periphery, for cells represented in B–K. n = 20 cells per condition. *** p<0.001, Mann-Whitney test.