SLC19A3 mediates high affinity thiamine uptake, propably via a proton anti-port mechanism. SLC19A3 has no folate transport activity.SLC19A3 is a member of the reduced folate family of micronutrient transporter genes.[supplied by OMIM]. Publication Note: This RefSeq record includes a subset of the publications that are available for this gene. Please see the Entrez Gene record to access additional publications.