HLA-DRB1

Gene Information
 
Gene Symbol
HLA-DRB1
 
Aliases
DRB1, HLA-DR1B, HLA-DRB, SS1
 
Entrez Gene ID
 
Gene Name
Major histocompatibility complex, class II, DR beta 1
 
Chromosomal Location
6p21.32
 
HGNC ID
 
Summary
HLA-DRB1 belongs to the HLA class II beta chain paralogs. The class II molecule is a heterodimer consisting of an alpha (DRA) and a beta chain (DRB), both anchored in the membrane. It plays a central role in the immune system by presenting peptides derived from extracellular proteins. Class II molecules are expressed in antigen presenting cells. The beta chain is approximately 26-28 kDa. It is encoded by 6 exons. Exon one encodes the leader peptide; exons 2 and 3 encode the two extracellular domains; exon 4 encodes the transmembrane domain; and exon 5 encodes the cytoplasmic tail. Within the DR molecule the beta chain contains all the polymorphisms specifying the peptide binding specificities. Hundreds of DRB1 alleles have been described and some alleles have increased frequencies associated with certain diseases. There are multiple pseudogenes of this gene. [provided by RefSeq, Feb 2020]
 
RefSeq DNA
 
RefSeq mRNA
  e!Ensembl
Gene
Transcript  
Protein

Gene Ontology (GO)

GO ID Ontology Function Evidence Reference
GO:0002506 Biological process Polysaccharide assembly with MHC class II protein complex IDA 21502329
GO:0005765 Cellular component Lysosomal membrane IDA 18305173
GO:0009986 Cellular component Cell surface IDA 21502329
GO:0016020 Cellular component Membrane HDA 19946888
GO:0031902 Cellular component Late endosome membrane IDA 18305173
Protein Information
 
Protein Name
Major histocompatibility complex, class II, DR beta 1, major histocompatibility complex, class II, DR beta 1 precursor, HLA class II histocompatibility antigen, DR-1 beta chain, MHC class II HLA-DR beta 1 chain, human leucocyte antigen DRB1, lymphocyte antigen DRB1
 
Function
 
Refseq Proteins
 
UniProt
 
PDB
Pathways
 
KEGG
 
Reactome
 

Phagosome
Cell adhesion molecules (CAMs)
Antigen processing and presentation
Hematopoietic cell lineage
Th1 and Th2 cell differentiation
Th17 cell differentiation
Intestinal immune network for IgA production
Type I diabetes mellitus
Leishmaniasis
Toxoplasmosis
Staphylococcus aureus infection
Tuberculosis
Influenza A
Human T-cell leukemia virus 1 infection
Herpes simplex virus 1 infection
Epstein-Barr virus infection
Asthma
Autoimmune thyroid disease
Inflammatory bowel disease (IBD)
Systemic lupus erythematosus
Rheumatoid arthritis
Allograft rejection
Graft-versus-host disease
Viral myocarditis

 

Downstream TCR signaling
Phosphorylation of CD3 and TCR zeta chains
Translocation of ZAP-70 to Immunological synapse
Generation of second messenger molecules
MHC class II antigen presentation
PD-1 signaling
Interferon gamma signaling

Interactions
 
STRING MINT IntAct
P04439 P04439
    View interactions
     

Associated Diseases

Disease groupDisease NameReferences
Digestive System Diseases
Liver Diseases
Colitis
Hepatitis
Pancreatitis
Crohn Disease
References
 

Studies on the human leukocyte antigens in patients with polycystic ovary syndrome in a Japanese population--possible susceptibility of HLA-A11 and -DRB1*0403 to patient population with polycystic ovary syndrome.

Kaibe Mamiko, Takakuwa Koichi, Murakawa Haruo, Ishii Keisuke, Tamura Masaki, Tanaka Kenichi
Department of Obstetrics and Gynecology, Niigata University School of Medicine, Niigata, Japan.
Am J Reprod Immunol. 2006 Apr;55(4):301-6. doi: 10.1111/j.1600-0897.2006.00369.x.

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