Intermediate and Late Transcripts from Poxviruses Have a Unique "Poly(A)head

question 14

Multiple Choice

Intermediate and late transcripts from poxviruses have a unique "poly(A) head" near the 5' end of the mRNA.What is the proposed function for this structure?

• A) It binds to the poly(A) tails at the 3' end of the mRNA.
• B) It stabilizes and protects the 5' end of the genome.
• C) It aids in recognition of the AUG start codon by ribosomes.
• D) It helps the nascent transcript bind to the viral RNA polymerase during transcription.
• E) It associates with the cap binding complex.

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