In the SsRNA Phage MS2, the Replicase and Lysis Proteins

question 15

Multiple Choice

In the ssRNA phage MS2, the replicase and lysis proteins are NOT produced immediately upon entry of the viral genome.Which of the following mechanisms is the primary explanation for why this happens?

• A) The start codons for these genes are buried in a very stable stem-loop structure.
• B) They have Shine-Dalgarno sequences that do not bind well to the ribosome.
• C) They both contain non-canonical TTG start codons.
• D) The genes encoding these proteins are uncoated from the capsid until later.
• E) The initiator tRNA does not bind well to the start codons of these genes.

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