Enables thiamine pyrophosphate transmembrane transporter activity. Involved in thiamine pyrophosphate transmembrane transport. Predicted to be located in apical plasma membrane. Predicted to be active in plasma membrane. Is expressed in embryo. Human ortholog(s) of this gene implicated in autosomal dominant nonsyndromic deafness 72. Orthologous to human SLC44A4 (solute carrier family 44 member 4). [provided by Alliance of Genome Resources, Apr 2022]