The function of ENSG00000118855 (MFSD1, major facilitator superfamily domain containing 1) is as follows. Lysosomal dipeptide uniporter that selectively exports lysine, arginine or histidine-containing dipeptides with a net positive charge from the lysosome lumen into the cytosol (PubMed:38507452). Could play a role in a specific type of protein O-glycosylation indirectly regulating macrophages migration and tissue invasion (PubMed:30910009). Also essential for liver homeostasis (By similarity). {ECO:0000250|UniProtKB:Q9DC37, ECO:0000269|PubMed:30910009, ECO:0000269|PubMed:38507452}.