Nucleic Acids Res. 2018 Oct 12;46(18):9617-9624. doi:10.1093/nar/gky792

Munir A, Banerjee A, Shuman S.

NAD+-dependent synthesis of a 5'-phospho-ADP-ribosylated RNA/DNA cap by RNA 2'-phosphotransferase Tpt1.

Tpt1 from Aeropyrum pernix (ApeTpt1).