Function | Catalyzes the removal of a penultimate prolyl residue from the N-termini of peptides, such as Leu-Pro-Ala. Also shows low activity towards peptides with Ala or Ser at the P1 position. Isoform 1: Promotes TNFRSF1B-mediated phosphorylation of MAPK8/JNK1 and MAPK9/JNK2, suggesting a function as an adapter protein for TNFRSF1B.the effect is independent of XPNPEP3 peptidase activity. May inhibit apoptotic cell death induced via TNF-TNFRSF1B signaling. |
Protein Name | Xaa-Pro Aminopeptidase 3X-Pro Aminopeptidase 3Aminopeptidase P3App3 |
Cellular Localisation | Isoform 1: MitochondrionCytoplasmMainly MitochondrialTranslocates To The Cytoplasm Following Tnfrsf1b ActivationIsoform 2: Cytoplasm |
Alternative Protein Names | Xaa-Pro Aminopeptidase 3 proteinX-Pro Aminopeptidase 3 proteinAminopeptidase P3 proteinApp3 proteinXPNPEP3 protein |
Information sourced from Uniprot.org