Which of the following describes a polyprotein, such as the Zika virus?
a. mRNAs from different segments of the influenza virus produce different proteins. |
b. An HIV virus produces a large protein that contains multiple structure proteins and a protease. |
c. During antigenic shift, hybrid influenza viruses show new combinations of proteins that are not easily recognized by the immune system. |
d. The poliovirus has a linear positive-strand RNA genome with a polyA tail similar to those found in eukaryotes. |
The correct answer is - b. An HIV virus produces a large protein that contains multiple structure proteins and protease.
Additional Information:
Polyproteins are composed of several smaller proteins, which attached covalently and form a large chain of protein. During maturation , viral polyproteins are cleaved by the protease enzymes and exhibit different biological functions.
Example : The HIV genome contains 9 genes which produces 15 different proteins, all of these are synthesized as Polyproteins.
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