Enables the transfer of lactate from one side of a membrane to the other. Lactate is 2-hydroxypropanoate, CH3-CHOH-COOH; L(+)-lactate is formed by anaerobic glycolysis in animal tissues, and DL-lactate is found in sour milk, molasses and certain fruit juices.
reactome:R-HSA-373867 "BSG:MCTs cotransport LACT, H+ from extracellular region to cytosol"
;
reactome:R-HSA-373875 "BSG:MCTs cotransport LACT, H+ from cytosol to extracellular region"