The function of SLC25A22 (solute carrier family 25 member 22, Ensembl gene identifier ENSG00000177542) is as follows. Mitochondrial glutamate/H(+) symporter. Responsible for the transport of glutamate from the cytosol into the mitochondrial matrix with the concomitant import of a proton (PubMed:11897791). Plays a role in the control of glucose-stimulated insulin secretion (By similarity). .