Invitrogen™ HLA-DQ Monoclonal Antibody (CC158), PE

HLA-DQ is one of the HLA (human leukocyte antigen) molecules belonging to class II of the major histocompatibility protein (MHC) surface proteins. HLA-DQ and the other MHC class II molecules are heterodimeric proteins consisting of an alpha (DQA) and a beta chain (DQB), both anchored in the membrane. They play a central role in the immune system by presenting peptides derived from extracellular proteins. MHC Class II molecules are expressed in antigen-presenting cells (APC: B lymphocytes, dendritic cells, macrophages) and present peptides endocytosed, digested, and loaded onto the proteins prior to their migration to the cell surface. Other human MHC class II molecules are HLA-DP, HLA-DM, HLA-DR, HLA-DOA, and HLA-DOB. HLA-DQ displays significant variability, particularly in the beta subunit within the region that affects the peptides bound and presented by the protein. Different classes of DQ based on similar beta subunits allow for the grouping of these variants into serotypes, which can often be recognized by antibodies raised against these subunits. HLA and MHC antibodies play a significant role in Immunopeptidomics, facilitating the identification and characterization of neoantigens through high-performance liquid chromatography coupled to tandem Mass Spectrometry.