Antibodies specific to HIV can only bind and inactivate particular strains of th

Question

Antibodies specific to HIV can only bind and inactivate particular strains of the HIV virus and if the virus mutates, the antibodies against the original strain may no longer be effective. Why might this be the case?

A. Antibodies are proteins with specific three dimensional shapes critical to their function B. Mutated viruses can deactivate antibodies C. Antibodies might denature under conditions resulting from infection with the new viral strain D. Antibodies may no longer be able to catalyze the reaction that destroys the virus

Explanation / Answer

A. Antibodies are proteins with specific three dimensional shapes critical to their function.

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