Probably transports organic cations (By similarity). Appears not to be the agmatine transporter. Expressed at highest levels in kidney and brain. Expressed at high levels in skeletal muscle, heart, liver, placenta and white blood cells. Expressed at moderate levels in lung and spleen. Expressed at low levels in thymus, small intestine and colon. Expressed in several intestinal tumor cell lines. Expressed at low levels at 20-25 weeks of gestation in fetal brain, lung, liver and kidney. Belongs to the major facilitator (TC 2.A.1) superfamily. Organic cation transporter (TC 2.A.1.19) family. Truncated N-terminus.