The C-terminal domain of RNA Pol II helps ensure that editing precedes splicing of the GluR-B transcript.
Ryman K, Fong N, Bratt E, Bentley DL, Ohman M. The C-terminal domain of RNA Pol II helps ensure that editing precedes splicing of the GluR-B transcript. RNA. 2007 Jul; 13(7):1071-8.