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MHC Class I antibody

MHC Class I and the Herpes Simplex Virus

MHC molecules (also known as major histocompatibility complex molecules) assist in the presentation of antigens to T cells in order to eradicate foreign pathogens.  These molecules are highly polymorphic, meaning that they exist in multiple variants in order to avoid pathogens evading their activation of the immune response.  MHC Class I molecules in particular deliver cytosolic peptides to the cell surface so that they can continue on through the cytosol and ultimately the endoplasmic reticulum (ER).

Major Histocompatibility Complex (MHC) Class I

The products of MHC genes are antigen-presenting molecules (APMs) designed for antigen fragment (peptide) presentation to the T-cell receptor. In particular, MHC Class I molecules play a key role in the immune system by presenting endogenously synthesized peptides derived from the endoplasmic reticulum (ER) lumen to CD8+ T-lymphocytes, which are usually cytotoxic T-cells. MHC Class I antigens are heterodimers consisting of one 44kD highly polymorphic alpha chain non-covalently complexed with an invariant 11.5kD beta2-microglobulin subunit.