SLC25A18 is a symbol for the gene, Solute carrier family 25 (glutamate carrier), member 18, in humans. Other names include: Mitochondrial glutamate carrier 2; Glutamate/H(+) symporter 2; Solute carrier family 25 member 18; GC-2; GC2. The encoded protein has an amino acid length of 315 and a mass of 33.8 kDa. Other isoforms may exist. SLC25A18 is a member of the Mitochondrial carrier (TC 2.A.29) family. This gene shares homology with other species, including: Mouse, Rat, Zebrafish, Frog.