Question

Which one of the following molecules does NOT play an important role in the class II MHC pathway of antigen presentation?

A. B2-Microglobulin
B. Cathepsin
C. Invariant chain
D. HLA-DM
E. Calnexin"

Answer 1

Calnexin does not play an important role in the class II MHC pathway of antigen presentation.

Step-by-step explanation:

In the class II MHC pathway of antigen presentation, Calnexin does NOT play an important role. Class II MHC molecules are only found on the surface of antigen-presenting cells like macrophages, dendritic cells, and B cells. Calnexin, on the other hand, is a chaperone protein found in the endoplasmic reticulum that helps with the folding and quality control of newly synthesized proteins.

It is not directly involved in the class II MHC pathway of antigen presentation.