Catenins are proteins that are linked to the cytoplasmic domain of transmembrane cadherins. p120 Catenin is one member of this Armadillo gene family of junctional plaque proteins . The association of catenins to cadherins produces a complex which is linked to the actin filament network, and which seems to be important for cadherins cell-adhesion properties. Recently it became clear that some catenins also mediate nuclear signaling. p120 Catenin is implicated both in cell transformation by SRC and in ligand-induced receptor signaling through the EGF, PDGF, CSF-1 and ERBB2 receptors.