Fig. 4. Interactions between p190RhoGAP and filamin. Immunoblots of p190RhoGAP coimmunoprecipitated with anti-filamin antibody (mAb 1678) and vice versa. Mouse IgG was used as a control for immunoprecipitation. Caveolin-1 and TFII-I were used as a positive control for filamin and p190RhoGAP immunoprecipitation respectively.