Cation-independent electroneutral transporter (not associated with membrane depolarization) of a variety of tricarboxylic and dicarboxylic acid-cycle intermediates. There is also small, but detectable, transport of monocarboxylics. Transport is through the epithelium of the gut and across the plasma membranes of organs involved in intermediary metabolism and storage (By similarity). Belongs to the SLC13A/DASS transporter (TC 2.A.47) family. NADC subfamily.