This gene encodes a member of the AID / APOBEC family of polynucleotide (deoxy)cytidine deaminases, which convert cytidine to uridine. Other AID/APOBEC family members are involved in mRNA editing, somatic hypermutation and recombination of immunoglobulin genes, and innate immunity to retroviral infection.
^Rogozin IB, Basu MK, Jordan IK, Pavlov YI, Koonin EV (September 2005). "APOBEC4, a new member of the AID/APOBEC family of polynucleotide (deoxy)cytidine deaminases predicted by computational analysis". Cell Cycle4 (9): 1281–5. doi:10.4161/cc.4.9.1994. PMID16082223.