
Ability of Cid1 to use modified UTP analogs for tailing. Cid1 tailing reactions were set up with the indicated analog either without (−, 1mM) or with (+, 0.5 mM each) competing unmodified UTP, using the MYL6(A+) model mRNA as a substrate. The 6% denaturing polyacrylamide gel was stained with SYBR Gold and imaged on a Typhoon Imager.










