Functions in post-Golgi recycling pathways. Acts as a recycling carrier to the cell surface. Interacts with SYNRG and ITSN1 (By similarity). Interacts with SLC9A7. Widely expressed, with highest expression in brain. May be produced at very low levels due to a premature stop codon in the mRNA, leading to nonsense-mediated mRNA decay. Belongs to the SCAMP family.