HLA DQ1/DQ3 Products


HLA-DQB1 belongs to the HLA class II beta chain paralogues. This class II molecule is a heterodimer consisting of analpha (DQA) and a beta chain (DQB), both anchored in the membrane. It plays a central role in the immune system bypresenting peptides derived from extracellular proteins. Class II molecules are expressed in antigen presenting cells(APC: B lymphocytes, dendritic cells, macrophages). The beta chain is approximately 26-28 kDa and it contains 6 exons.Exon one encodes the leader peptide, exons 2 and 3 encode the two extracellular domains, exon 4 encodes thetransmembrane domain and exon 5 encodes the cytoplasmic tail. Within the DQ molecule both the alpha chain and the betachain contain the polymorphisms specifying the peptide binding specificities, resulting in up to 4 differentmolecules. Typing for these polymorphisms is routinely done for bone marrow transplantation. (provided by RefSeq)


Product By Gene ID 3119
Alternate Names
  • HLA class II histocompatibility antigen, DQ beta 1 chain
  • IDDM1
  • MHC class II antigen DQB1
  • MHC class II antigen HLA-DQ-beta-1
  • MHC class II DQ beta chain
  • MHC class II HLA-DQ beta glycoprotein

Research Areas for HLA DQ1/DQ3

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Adaptive Immunity

PTMs for HLA DQ1/DQ3

Learn more about PTMs related to HLA DQ1/DQ3.


Bioinformatics Tool for HLA DQ1/DQ3

Discover related pathways, diseases and genes to HLA DQ1/DQ3. Need help? Read the Bioinformatics Tool Guide for instructions on using this tool.
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