| Post Translational Modifications | Autophosphorylated. Accumulates in an inactive autophosphorylated state and autophosphorylation is stimulated by phosphatidic acid and phosphatidylinositol 3,5-bisphosphate but not by Mn(2+) or Zn(2+). The presence of spermine results in a dose-dependent reduction in autophosphorylation. |
| Function | ATPase which acts as a lysosomal polyamine exporter with high affinity for spermine. Also stimulates cellular uptake of polyamines and protects against polyamine toxicity. Plays a role in intracellular cation homeostasis and the maintenance of neuronal integrity. Contributes to cellular zinc homeostasis. Confers cellular protection against Mn(2+) and Zn(2+) toxicity and mitochondrial stress. Required for proper lysosomal and mitochondrial maintenance. Regulates the autophagy-lysosome pathway through the control of SYT11 expression at both transcriptional and post-translational levels. Facilitates recruitment of deacetylase HDAC6 to lysosomes to deacetylate CTTN, leading to actin polymerization, promotion of autophagosome-lysosome fusion and completion of autophagy. Promotes secretion of exosomes as well as secretion of SCNA via exosomes. Plays a role in lipid homeostasis. |
| Protein Name | Polyamine-Transporting Atpase 13a2 |
| Database Links | Reactome: R-HSA-936837 |
| Cellular Localisation | Lysosome MembraneMulti-Pass Membrane ProteinLate Endosome MembraneEndosomeMultivesicular Body MembraneCytoplasmic VesicleAutophagosome Membrane |
| Alternative Antibody Names | Anti-Polyamine-Transporting Atpase 13a2 antibodyAnti-ATP13A2 antibodyAnti-PARK9 antibody |
Information sourced from Uniprot.org
