The function of Ensembl gene identifier ENSG00000101276 (SLC52A3, solute carrier family 52 member 3) is as follows. Plasma membrane transporter mediating the uptake by cells of the water soluble vitamin B2/riboflavin that plays a key role in biochemical oxidation-reduction reactions of the carbohydrate, lipid, and amino acid metabolism (PubMed:20463145, PubMed:22273710, PubMed:24264046, PubMed:27702554). Humans are unable to synthesize vitamin B2/riboflavin and must obtain it via intestinal absorption (PubMed:20463145). {ECO:0000269|PubMed:20463145, ECO:0000269|PubMed:22273710, ECO:0000269|PubMed:24264046, ECO:0000269|PubMed:27702554, ECO:0000303|PubMed:20463145}.