May be involved in several stages of intracellular trafficking. Plays a role in targeting ligand-activated EGFR to the lysosomes for degradation after endocytosis from the cell surface and release from the Golgi. Component of the retromer complex, a complex required to retrieve lysosomal enzyme receptors (IGF2R and M6PR) from endosomes to the trans-Golgi network. Interacts with membranes containing phosphatidylinositol 3-phosphate (PtdIns(3P)) or phosphatidylinositol 3,5-bisphosphate (PtdIns(3,5)P2).
Specificity
Natural and recombinant Human Sorting nexin-1
Subcellular Location
Endosome membrane Peripheral membrane protein Cytoplasmic side Golgi apparatus trans-Golgi network membrane Peripheral membrane protein Cytoplasmic side Early endosome membrane Peripheral membrane protein Cytoplasmic side Enriched on tubular elements of the early endosome membrane. Binds preferentially to highly curved membranes enriched in phosphatidylinositol 3-phosphate (PtdIns(3P)) or phosphatidylinositol 3,5-bisphosphate (PtdIn.
Homodimer. Self-assembles into a complex of approximately 300 kDa (By similarity). Interacts with HGS (By similarity). Component of the retromer complex composed of VPS26 (VPS26A or VPS26B), VPS29, VPS35, SNX1 and SNX2. Interacts with SNX6.