Consider a virus with a plus strand RNA genome 8 kb in length, which encodes 8 p
ID: 197364 • Letter: C
Question
Consider a virus with a plus strand RNA genome 8 kb in length, which encodes 8 proteins. Which of the following is a known mechanism for producing all 8 proteins from this genome?
A. A single polyprotein is synthesized which is then processed by proteases to form 8 proteins B. The RNA is cleaved into 8 fragments, each of which is translated into a different protein C. Immediately upon entering the cells, the virion-associated viral RNA polymerase produces 8 subgenomic mRNAs from the plus strand RNA genome D. There is no way to produce multiple proteins from a eukaryotic RNAExplain your answer, thanks.
Explanation / Answer
In this question correct answer is A. Positive RNA strand viruse such as polio virus, toga viruses infect the host cells and synthesize a single polypeptide and this polypeptide is cleaved by proteaseses.
In this RNA fragmentiaon and subgenomice mRNA formation is not occure.