Protease that specifically cleaves 'Lys-48'-linked polyubiquitin chains. Deubiquitinating enzyme associated with the 19S regulatory subunit of the 26S proteasome. Putative regulatory component of the INO80 complex; however is inactive in the INO80 complex and is activated by a transient interaction of the INO80 complex with the proteasome via ADRM1.
Subcellular locations: Cytoplasm, Nucleus
Associates with the proteasome 19S subunit in the cytoplasm. Associates with the INO80 complex in the nucleus.