Cellular misfolded proteins rescued from degradation by MHC class II molecules are possible targets for autoimmune diseases.

Abstract excerpt

The major function of major histocompatibility complex (MHC) class II molecules is the presentation of peptide antigens to helper T cells. However, when misfolded proteins are associated with MHC class II molecules in the endoplasmic reticulum, they are transported to the cell surface by MHC class II molecules without processing to peptides. Of note, misfolded proteins complexed with MHC class II molecules are...

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