The carboxyl tail domain of RNA polymerase II plays a key role in:
A)capping of the 5′ end of a new transcript.
B)recruiting capping enzymes to the RNA polymerase enzyme.
C)addition of a poly(A)tail at the 3′ end of a transcript.
D)splicing of introns out of RNA transcripts.
E)All of the answer options are correct.

Question

Quizplus · Accepted Answer

The carboxyl tail domain (CTD) of RNA polymerase II is involved in several key processes of mRNA processing and modification. It helps in the capping of the 5′ end of a new transcript, recruits capping enzymes to the RNA polymerase enzyme, is involved in the addition of a poly(A) tail at the 3′ end of a transcript, and plays a role in the splicing of introns out of RNA transcripts.

The Carboxyl Tail Domain of RNA Polymerase II Plays a Key