Invitrogen™ Human HLA-DOA (aa 75-124) Control Fragment Recombinant Protein

Description

Highest antigen sequence indentity to the following orthologs: Mouse (76%), Rat (76%). This recombinant protein control fragment may be used for blocking experiments with the corresponding antibody, PA5-60904 (PA5-60904. In IHC/ICC and WB experiments, we recommend a 100x molar excess of the protein fragment control based on the concentration and the molecular weight. Pre-incubate the antibody-protein control fragment mixture for 30 min at room temperature.

Reacts with HLA-DO, a heterodimer formed by DNalpha and DObeta subunits in B cells. DNalpha and DObeta are the products of the non-classical class II genes, HLA-DNA and HLA-DOB, respectively. DO forms tight complexes with DM in the endoplasmic reticulum and is thereby sorted to lysosomal vesicles during antigen processing and presentation. It is tightly associated with DM and it is selectively expressed on antigen-presenting cells, such as B cells, dendritic cells and thymic epithelial cells. DO can enhance the efficiency of peptide loading and has been found to stabilize DM at low pH, preserving its chaperon activity. DO-DM complexes are more efficient than DM in protecting empty DR molecules. Reports describe DO as a co-chaperone of DM. 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.