Acts as component of the retromer cargo-selective complex (CSC). The CSC is believed to be the core functional component of retromer or respective retromer complex variants acting to prevent missorting of selected transmembrane cargo proteins into the lysosomal degradation pathway. Retromer mediates retrograde transport of cargo proteins from endosomes to the trans-Golgi network (TGN) (By similarity). Acts also as component of the retriever complex. The retriever complex is an heterotrimeric complex related to retromer cargo-selective complex (CSC) and essential for retromer-independent retrieval and recycling of numerous cargos such as integrins. In the endosomes, retriever complex drives the retrieval and recycling of NxxY-motif-containing cargo proteins by coupling to SNX17, a cargo essential for the homeostatic maintenance of numerous cell surface proteins associated with processes that include cell migration, cell adhesion, nutrient supply and cell signaling (By similarity). Component of the heterotrimeric retromer cargo-selective complex (CSC) which is believed to associate with variable sorting nexins to form functionally distinct retromer complex variants (By similarity). Component of the heterotrimeric retriever complex (By similarity). Belongs to the VPS29 family.