Members of this protein family are the arginine/ornithine antiporter, ArcD. This exchanger of ornithine for arginine occurs in a system with arginine deiminase, ornithine carbamoyltransferase, and carbamate kinase, with together turn arginine to ornithine with the generation of ATP and release of CO2. [Transport and binding proteins, Amino acids, peptides and amines]
Jiyao W et al.(2023). "The conserved domain database in 2023.",