RNA Synthesis of Influenza Virus is Primed by 7-Methylguanine Fragments

Question

RNA synthesis of influenza virus is primed by 7-methylguanine fragments of host mRNA, obtained by
A) telomerase activity.
B) the rolling-circle mechanism.
C) endocytosis.
D) exocytosis.
E) cap-snatching.

Accepted Answer

Influenza virus RNA synthesis is primed by a process called cap-snatching, where the virus steals the 7-methylguanine fragments (also known as the cap) from the 5' end of the host mRNA. This serves as a primer for the virus's own RNA synthesis.