The APOBEC4 gene encodes a protein of the APOBEC family. Enzymes of this family are responsible for mRNA editing. They introduce base exchanges before the protein is translated, which plays an important role in defense of viral infections and lipid metabolism.
Rogozin IB et. al. (2005) APOBEC4, a new member of the AID/APOBEC family of polynucleotide (deoxy)cytidine deaminases predicted by computational analysis.
Update: Sept. 26, 2018