The function of Ensembl gene identifier ENSG00000007216 (SLC13A2, solute carrier family 13 member 2) is as follows. Low-affinity sodium-dicarboxylate cotransporter, that mediates the entry of citric acid cycle intermediates, such as succinate, citrate, fumarate and alpha-ketoglutarate (2-oxoglutarate) into the small intestine and renal proximal tubule (PubMed:10894787, PubMed:8967342, PubMed:9668069, PubMed:38552027). Transports the dicarboxylate into the cell with a probable stoichiometry of 3 Na(+) for 1 divalent dicarboxylate, rendering the process electrogenic (PubMed:10894787, PubMed:8967342, PubMed:9668069). Citrate is transported in protonated form as a divalent anion, rather than the trivalent form which is normally found in blood (PubMed:10894787). Has a critical role in renal dicarboxylate transport (By similarity). {ECO:0000250|UniProtKB:Q9ES88, ECO:0000269|PubMed:10894787, ECO:0000269|PubMed:38552027, ECO:0000269|PubMed:8967342, ECO:0000269|PubMed:9668069}.