APOBEC3A is the predominant global editor of cytosines in human mRNAs and in single-strand RNA viruses. - Kockler ZW; Bostan H; Klimczak LJ; Hsiao YC; Dennen MS; Cook ME; Mertz TM; Perelygina L; Kazanov MD; Li JL; Roberts SA; Gordenin DA (G3 (Bethesda, Md.), 2026)