Component of a nucleolar TRAMP-like complex, an ATP-dependent exosome regulatory complex consisting of a helicase (MTREX), an oligadenylate polymerase (TENT4B or TENT4A), and a substrate specific RNA-binding factor (ZCCHC7 or ZCCHC8). Several TRAMP-like complexes exist with specific compositions and are associated with nuclear, or nucleolar RNA exosomes (By similarity). Probable cloning artifact. Probable cloning artifact. Probable cloning artifact. Probable cloning artifact. Probable cloning artifact.