Rho protein functions as a hexamer of a single polypeptide chain with 419 residues, which is the product of the rho gene. It is an RNA-binding protein with the capacity to hydrolyze ATP and other nucleoside triphosphates.
Rhosin is an effective and specific RhoA subfamily Rho GTPases inhibitor, which specifically binds to RhoA to inhibit RhoA-GEF interaction (Kd: ~ 0.4 uM). Rhosin does not interact with Cdc42 or Rac1, nor the GEF, LARG. Rhosin causes cell apoptosis.