Transports arginine, lysine, homoarginine, methylarginine and, to a much lesser extent, ornithine and histidine . Can restore ornithine transport in cells lacking the primary mitochondrial ornithine transporter SLC25A15 . Does not transport carnitine nor acylcarnitines . Functions by both counter-exchange and uniport mechanisms .
Mitochondrion inner membrane ; Multi-pass membrane protein .
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