Proton-linked monocarboxylate transporter. It catalyzes the transport of pyruvate across the plasma membrane . Probably involved in hepatic lipid metabolism: overexpression results in an increase of triacylglycerol(TAG) levels, small increases in intracellular diacylglycerols and decreases in lysophosphatidylcholine, cholesterol ester and sphingomyelin lipids .
Subcellular locations: Endoplasmic reticulum membrane, Cell membrane
Expressed in liver, salivary gland and thyroid.