Figure 2: dGMP, dCMP, and dAMP specifically enhance C-tailing, G-tailing, and T-tailing, respectively.
From: Efficient N-tailing of blunt DNA ends by Moloney murine leukemia virus reverse transcriptase

Ten nanomolar FAM70 DNA was subjected to A-, C-, G-, and T- tailing in the presence of 10 mM dAMP, dCMP, dGMP, or dTMP for 5 min. TE buffer was added as control. The unreacted control of each tailing reaction is shown at the top.