Enables thiamine transmembrane transporter activity. Involved in thiamine transmembrane transport. Predicted to be integral component of plasma membrane. Predicted to be active in plasma membrane. Used to study biotin-responsive basal ganglia disease. Human ortholog(s) of this gene implicated in biotin-responsive basal ganglia disease. Orthologous to human SLC19A3 (solute carrier family 19 member 3). [provided by Alliance of Genome Resources, Apr 2022]