Cytosolic tripeptidyl-peptidase that releases N-terminal tripeptides from polypeptides and is a component of the proteolytic cascade acting downstream of the 26S proteasome in the ubiquitin-proteasome pathway (, ). It plays an important role in intracellular amino acid homeostasis . Stimulates adipogenesis (By similarity).
Subcellular locations: Cytoplasm, Nucleus
Translocates to the nucleus in response to gamma-irradiation.