Endosome-associated protein that plays a role in membrane receptor sorting, cytokinesis and ciliogenesis (PubMed:23108400, PubMed:25278552, PubMed:27767179). Involved in the endosome-to-plasma membrane trafficking and recycling of SNX27-retromer-dependent cargo proteins, such as GLUT1 (PubMed:25278552). Involved in the regulation of cytokinesis; the function may involve PTPN13 and GIT1 (PubMed:23108400). Plays a role in the formation of cilia (PubMed:27767179). Involved in cargo protein localization, such as PKD2, at primary cilia (PubMed:27767179). Involved in the presentation of the tumor necrosis factor (TNF) receptor TNFRSF1A on the cell surface, and hence in the modulation of the TNF-induced apoptosis (By similarity). Found in a complex with ENTR1, PTPN13 and GIT1 (PubMed:23108400). Interacts with PTPN13 (via the FERM domain) (PubMed:23108400). Interacts (via N-terminus) with GIT1 (via N- and C-terminus); this interaction is direct (PubMed:23108400). Interacts with NOD2 (PubMed:27812135). Interacts (via N-terminus) with IFT88 (PubMed:27767179). Interacts with VPS35 (PubMed:25278552). Colocalizes in a WASHC2-dependent manner with the retromer CSC complex at endosomes (PubMed:25278552). During cytokinesis colocalized with PTPN13 at the midbody (PubMed:23108400). Colocalizes with IFT88 and gamma-tubulin at the basal body of primary cilia (PubMed:27767179). Colocalizes with IFT88 and pericentrin at the centrosome (PubMed:27767179). Expressed in the colon (at protein level). Tne N-terminal domain is necessary and sufficient for basal body localization and ciliogenesis. Phosphorylated. Belongs to the ENTR1 family. Truncated N-terminus.