Phosphorylation of serine 2 within the RNA polymerase II C-terminal domain couples transcription and 3' end processing.
Ahn SH, Kim M, Buratowski S. Phosphorylation of serine 2 within the RNA polymerase II C-terminal domain couples transcription and 3' end processing. Mol Cell. 2004 Jan 16; 13(1):67-76.