The carboxyl-terminal domain of polymerase is phosphorylated prior to the formation of the initiation complex.

Name: The carboxyl-terminal domain of polymerase is phosphorylated prior to the formation of the initiation complex.
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The carboxyl-terminal domain (CTD) of RNA polymerase II is phosphorylated after the formation of the initiation complex, which is a crucial step for the transition from initiation to elongation phase of transcription.

The Carboxyl-Terminal Domain of Polymerase Is Phosphorylated Prior to the Formation