ARP9 is an alias for the gene, Apolipoprotein B mRNA editing enzyme, catalytic polypeptide-like 3G, in humans. Other names include: DNA dC->dU-editing enzyme APOBEC-3G; APOBEC-related cytidine deaminase; APOBEC-related protein; ARCD; APOBEC-related protein 9; ARP-9; CEM-15; CEM15; Deoxycytidine deaminase; A3G; DNA dC->dU-editing enzyme APOBEC-3G ; MDS019; bK150C2.7; dJ494G10.1. The encoded protein is an enzyme with an amino acid length of 384 and a mass of 46.4 kDa. Other isoforms may exist. ARP9 is a member of the Cytidine and deoxycytidylate deaminase family. This gene shares homology with other species, including: Mouse.