cylindromatosis (turban tumor syndrome); Negative regulator of TRAF2 and NF-kappa-B signaling pathway. Has deubiquitinating activity that is directed towards non-'Lys-48'-linked polyubiquitin chains. The inhibition of NF- kappa-B activation is mediated at least in part, by the deubiquitination and inactivation of TRAF2 and, to a lesser extent, TRAF6 (956 aa)