A mutation in the gene for CD4 leads to the production of nonfunctioning CD4 proteins in the plasma membrane of a helper T cell.What role would the helper T cell be unable to perform?

Question

Quizplus · Accepted Answer

Helper T cells interact with a class II MHC-antigen complex on the surface of antigen-presenting cells. Since the CD4 protein is nonfunctioning, the helper T cell would be unable to interact with the class II MHC-antigen complex, which is necessary for the activation of other immune cells. Therefore, the helper T cell would be unable to perform its role in stimulating an immune response against the presented antigen.

A Mutation in the Gene for CD4 Leads to the Production