Function | Guanine nucleotide exchange factor (GEF) which activates RAB21 and possibly RAB28. Promotes the exchange of GDP to GTP, converting inactive GDP-bound Rab proteins into their active GTP-bound form. In response to starvation-induced autophagy, activates RAB21 which in turn binds to and regulates SNARE protein VAMP8 endolysosomal transport required for SNARE-mediated autophagosome-lysosome fusion. Acts as an adapter for the phosphatase MTMR2. Increases MTMR2 catalytic activity towards phosphatidylinositol 3,5-bisphosphate and to a lesser extent towards phosphatidylinositol 3-phosphate. |
Protein Name | Myotubularin-Related Protein 13Inactive Phosphatidylinositol 3-Phosphatase 13Set-Binding Factor 2 |
Database Links | Reactome: R-HSA-1660499Reactome: R-HSA-8876198 |
Cellular Localisation | CytoplasmPerinuclear RegionMembranePeripheral Membrane ProteinEndosome MembraneCell ProjectionAxonAssociated With MembranesLocalizes To Vacuoles In Hypo-Osmotic ConditionsMembrane Localization Is Likely To Be Mediated Via Its Interaction With Mtmr2 |
Alternative Protein Names | Myotubularin-Related Protein 13 proteinInactive Phosphatidylinositol 3-Phosphatase 13 proteinSet-Binding Factor 2 proteinSBF2 proteinCMT4B2 proteinKIAA1766 proteinMTMR13 protein |
Information sourced from Uniprot.org