To promote the translational activity of ribosomes in human cells for synthesizing viral proteins during infection, viruses:
a)Keep a ribosome binding site specific to human ribosomes on their genome.
b)Only adhere to and infect metabolically active host cells where protein synthesis is high.
c)Maintain introns and sometimes exons in there genomes to appear as eukaryotic mRNA.
d)Chemically modify (e.g., cap and methylate) the transcripts.
A) chemically modify (e.g., cap and methylate) the transcripts.
Eukaryotic mRNAs have 7-methyl guanosine at the 5' end which is referred to as 5' cap. This is a post transcriptional modification of eukaryotic mRNA. 5' capping of the mRNA is for protecting the transcript and is required for for its efficient translation in eukaryotic cells. So human viruses have evolved to develop 5' capped transcripts to survive in the host cell.
To promote the translational activity of ribosomes in human cells for synthesizing viral proteins during infection,...