Acts as a component of the GARP complex that is involved in retrograde transport from early and late endosomes to the trans-Golgi network (TGN). The GARP complex is required for the maintenance of the cycling of mannose 6-phosphate receptors between the TGN and endosomes, this cycling is necessary for proper lysosomal sorting of acid hydrolases such as CTSD . Within the GARP complex, required to tether the complex to the TGN. Not involved in endocytic recycling .
Subcellular locations: Golgi apparatus, Trans-Golgi network, Membrane
Associates with membranes in an EIPR1-independent manner.