Polyadenylation: mRNA modification at the 3' end; protects the mRNA from degradation
Which of the following is not required for the polyadenylation?
A. Polyadenylation signal upstream of the cleavage site
B. Polyadenylation signal downstream of the cleavage site
C. Consensus sequence AAUAAA
D. Uracil-rich sequence downstream of the cleavage site
E. Presence of the Shine–Dalgarno sequence
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