- RhoGDI-3 is a new GDP dissociation inhibitor (GDI). Identification of a non-cytosolic GDI protein interacting with the small GTP-binding proteins RhoB and RhoG. Zalcman, G., Closson, V., Camonis, J., Honoré, N., Rousseau-Merck, M.F., Tavitian, A., Olofsson, B. J. Biol. Chem. (1996)