Dear Editor,
The Hippo signaling pathway was discovered to control organ size in Drosophila through regulating cell proliferation and apoptosis (Yu et al., 2015). Arising studies over the past two decades have defined the core components and regulation mechanisms of the pathway in both Drosophila and mammals. The core components and fundamental function of the Hippo pathway are highly conserved in mammals. Active Ste20-like kinases 1/2 (MST1/2) phosphorylates adaptor protein Sav family WW domain-containing protein 1 (SAV1) and MOB1A/B, and phosphorylated MOB1A/B could recruit large tumor suppressor 1/2 (LATS1/2) for phosphorylation by MST1/2 at the hydrophobic motif (HM), followed by LATS1/2 autophosphorylation...