16 (link),
17 (link) Anti‐RhoC and SMAD specific E3 ubiquitin protein ligase 2 (SMURF2) were from Abcam (UK). Anti‐NEDD4 E3 ubiquitin protein ligase (NEDD4) and anti‐GAPDH antibodies were obtained from Cell Signaling Technology (USA). The anti‐WW domain containing E3 ubiquitin protein ligase 1 (WWP1) antibody was purchased from Proteintech (China).