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C0817 Sigma

Monoclonal Anti-HLA-DQ antibody produced in mouse

clone HK19, purified immunoglobulin, buffered aqueous solution

Synonym: Monoclonal Anti-HLA-DQ



Related Categories Alphabetical Index, Analytical Cytology, Antibodies, Antibodies for Cell Biology, Antibodies for Immune Cell Signaling and Blood,
species reactivity   human
application(s)   flow cytometry: 5 μL using 1 × 106 cells
clone   HK19, monoclonal
antibody form   purified immunoglobulin
form   buffered aqueous solution
isotype   IgG2b
shipped in   wet ice
storage temp.   2-8°C
Gene Information   human ... HLA-DQB1(3119)
biological source   mouse
conjugate   unconjugated



GM-1500 human tumor cell line.

Antigen Background

HLA-DQ molecules are bimolecular glycoprotein complexes of 29 kDa and 33 kDa components. The HLA-DQ antigens are present on peripheral blood lymphocytes and tonsillar and splenic mononuclear cells.

Physical form

Solution in 0.01 M phosphate buffered saline, pH 7.4, containing 1% bovine serum albumin and 15 mM sodium azide


Recognizes MHC Class II molecules that are preferentially expressed on the surface of B lymphocytes. The antibody reacts weakly with resting or ConA-activated T cells, monocytes, granulocytes, and erythrocytes.


Monoclonal Anti-HLA-DQ antibody produced in mouse is suitable for flow cytometry at a concentration of 5 μL using 1 × 106 cells.

Biochem/physiol Actions

Human leukocyte antigen (HLA)-DQ is a cell surface receptor type protein found on antigen presenting cells. DQ is a αβ heterodimer of the MHC Class II type. It plays a central role in the immune system and is expressed in antigen presenting cells. HLA-DQ expression in cystic fibrosis CF is associated with inflammation and reduces response to Interferon γ (IFNγ). HLA-DQ acts as alloantibody most frequently associated with the generation of de novo donor-specific antibody (DSA) and antibody-mediated-rejection but does not support organ transplantation.

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