Anti-HLA-DR, DP, DQ antibodies, human

Anti-HLA-DR, DP, DQ antibodies, human

Clone: REA332 | Dilution: 1:11
Clone REA332 recognizes all major histocompatibility class (MHC) class II HLA-DR, DP, and most DQ antigens. Expressed on the surface of most nucleated cells, MHC class II molecules play an important role in the immune system. They are essential in the defense against infection and are a main consideration in transplantation medicine. In addition to presenting antigenic peptides from predominantly extracellular sources to CD4
T cells, MHC class II molecules also mediate the thymic selection of T helper cells. MHC class II molecules consist of an α and β chain and are transported to endosomal-lysosomal compartments by the invariant chain. In humans, MHC class II molecules are encoded by three different loci, HLA-DR, -DQ, and -DP, which display 70% similarity to each other. Despite the essential function of MHC class II molecules in immune defense against pathogens, some alleles are frequently linked to immune diseases.
Additional information: Clone REA332 displays negligible binding to Fc receptors.

Alternative Names


Technical specifications

  • Antigen: HLA-DR, DP, DQ
  • Clone: REA332
  • Isotype: recombinant human IgG1
  • Isotype control: REA Control (S) antibodies
  • Alternative names of antigen: HLA-DPA1, HLA-DPB1, HLA-DQA1, HLA-DQA2, HLA-DQB1, HLA-DQB2, HLA-DQB3, HLA-DRA, HLA-DRB1
  • Entrez Gene ID: 3123, 3122, 3127, 3126, 3125, 16149, 3115, 3113, 3117, 3118, 3119, 3120, 3121
  • Cross-reactivity:
    chimpanzee (
    Pan troglodytes
    olive baboon (
    Papio anubis
    cynomolgus monkey (
    Macaca fascicularis
    common marmoset (
    Callithrix jacchus
  • Distribution of antigen: nucleated cells
  • Product format: Reagents are supplied in buffer containing stabilizer and 0.05% sodium azide.
  • Fixation: The antibody is suited for staining of formaldehyde-fixed cells.
  • Storage: Store protected from light at 2–8 °C. Do not freeze.
  • Available conjugates: FITC, PE, APC, PE-Vio770, APC-Vio770, Biotin
REAfinity clone is tested against different known clones, in a blocking experiment, to identify whether they recognize completely overlapping (++), partially overlapping (+), or completely different epitopes (-). In a blocking experiment, cells are incubated with an excess of purified unconjugated REAfinity clone followed by staining with conjugated form of the other known clones. 
Other clonesOverlap in epitope recognition with REA332
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