HLA-DRB3 (gene)

Major histocompatibility complex, class II, DR beta 3

Structure of HLA-DRB3 (green) complexed with HLA-DRA (cyan) and a fragment of Integrin, beta 3 (magenta) based on the PDB 2Q6W coordinates.

Available structures

PDB

Ortholog search: PDBe, RCSB

List of PDB id codes
2Q6W, 3C5J

Identifiers

Symbols

HLA-DRB3 ; HLA-DR3B

External IDs

OMIM: 612735 HomoloGene: 123833 ChEMBL: 3460 GeneCards: HLA-DRB3 Gene

Gene ontology
Molecular function	• protein binding • MHC class II receptor activity • peptide antigen binding
Cellular component	• Golgi membrane • lysosomal membrane • plasma membrane • integral to plasma membrane • external side of plasma membrane • ER to Golgi transport vesicle membrane • membrane • transport vesicle membrane • endocytic vesicle membrane • clathrin-coated endocytic vesicle membrane • late endosome membrane • trans-Golgi network membrane • MHC class II protein complex • integral to lumenal side of endoplasmic reticulum membrane
Biological process	• immunoglobulin production involved in immunoglobulin mediated immune response • inflammatory response to antigenic stimulus • humoral immune response mediated by circulating immunoglobulin • immune response • signal transduction • detection of bacterium • cytokine-mediated signaling pathway • antigen processing and presentation of exogenous peptide antigen via MHC class II • T cell costimulation • regulation of interleukin-4 production • negative regulation of interferon-gamma production • positive regulation of insulin secretion involved in cellular response to glucose stimulus • T-helper 1 type immune response • negative regulation of T cell proliferation • T cell receptor signaling pathway • protein tetramerization • interferon-gamma-mediated signaling pathway • regulation of interleukin-10 secretion
Sources: Amigo / QuickGO

RNA expression pattern

More reference expression data

Orthologs

Species

Human

Mouse

n/a

n/a

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RefSeq (mRNA)

NM_022555

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RefSeq (protein)

NP_072049

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Location (UCSC)

Chr HSCHR6_MHC_APD:
32.47 – 32.48 Mb

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PubMed search

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HLA class II histocompatibility antigen, DRB3-1 beta chain is a protein that in humans is encoded by the HLA-DRB3 gene.^[1]

Function

The protein encoded by this gene belongs to the HLA class II beta chain paralogues. 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 (APC: B lymphocytes, dendritic cells, macrophages).^[1]

Gene structure and polymorphisms

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. Within the DR molecule the beta chain contains all the polymorphisms specifying the peptide binding specificities. Typing for these polymorphisms is routinely done for bone marrow and kidney transplantation.^[1]

Gene expression

DRB1 is expressed at a level five times higher than its paralogues DRB3, DRB4 and DRB5. DRB1 is present in all individuals. Allelic variants of DRB1 are linked with either none or one of the genes DRB3, DRB4 and DRB5. There are 4 related pseudogenes: DRB2, DRB6, DRB7, DRB8 and DRB9.^[1]

References

↑ 1.0 1.1 1.2 1.3 "Entrez Gene: HLA-DRB3 major histocompatibility complex, class II, DR beta 3".

Germain RN (1996). "Binding domain regulation of MHC class II molecule assembly, trafficking, fate, and function.". Semin. Immunol. 7 (6): 361–72. doi:10.1006/smim.1995.0041. PMID 8775462.
Piatier-Tonneau D, Gastinel LN, Amblard F et al. (1991). "Interaction of CD4 with HLA class II antigens and HIV gp120.". Immunogenetics 34 (2): 121–8. doi:10.1007/BF00211424. PMID 1869305.
Nong Y, Kandil O, Tobin EH et al. (1991). "The HIV core protein p24 inhibits interferon-gamma-induced increase of HLA-DR and cytochrome b heavy chain mRNA levels in the human monocyte-like cell line THP1.". Cell. Immunol. 132 (1): 10–6. doi:10.1016/0008-8749(91)90002-S. PMID 1905983.
Ress SR, Rousseau J, Ratanjee B et al. (1991). "HLA class II induction by interferon-gamma in K562 variant cell line: inhibition by serum lipid.". Hum. Immunol. 31 (1): 57–66. doi:10.1016/0198-8859(91)90049-F. PMID 1908841.
Rosenstein Y, Burakoff SJ, Herrmann SH (1990). "HIV-gp120 can block CD4-class II MHC-mediated adhesion.". J. Immunol. 144 (2): 526–31. PMID 1967269.
Callahan KM, Fort MM, Obah EA et al. (1990). "Genetic variability in HIV-1 gp120 affects interactions with HLA molecules and T cell receptor.". J. Immunol. 144 (9): 3341–6. PMID 1970352.
Bowman MR, MacFerrin KD, Schreiber SL, Burakoff SJ (1991). "Identification and structural analysis of residues in the V1 region of CD4 involved in interaction with human immunodeficiency virus envelope glycoprotein gp120 and class II major histocompatibility complex molecules.". Proc. Natl. Acad. Sci. U.S.A. 87 (22): 9052–6. doi:10.1073/pnas.87.22.9052. PMC 55099. PMID 1978941.
Gorski J (1989). "HLA-DR beta-chain polymorphism. Second domain polymorphism reflects evolutionary relatedness of alleles and may explain public serologic epitopes.". J. Immunol. 143 (1): 329–33. PMID 2471740.
Kao HT, Gregersen PK, Tang JC et al. (1989). "Molecular analysis of the HLA class II genes in two DRw6-related haplotypes, DRw13 DQw1 and DRw14 DQw3.". J. Immunol. 142 (5): 1743–7. PMID 2493052.
Jonsson AK, Andersson L, Rask L (1989). "A cellular and functional split in the DRw8 haplotype is due to a single amino acid replacement (DR beta ser 57- asp 57).". Immunogenetics 29 (5): 308–16. doi:10.1007/BF00352840. PMID 2497068.
Clayton LK, Sieh M, Pious DA, Reinherz EL (1989). "Identification of human CD4 residues affecting class II MHC versus HIV-1 gp120 binding.". Nature 339 (6225): 548–51. doi:10.1038/339548a0. PMID 2543930.
Diamond DC, Sleckman BP, Gregory T et al. (1988). "Inhibition of CD4+ T cell function by the HIV envelope protein, gp120.". J. Immunol. 141 (11): 3715–7. PMID 2846691.
Angelini G, de Preval C, Gorski J, Mach B (1986). "High-resolution analysis of the human HLA-DR polymorphism by hybridization with sequence-specific oligonucleotide probes.". Proc. Natl. Acad. Sci. U.S.A. 83 (12): 4489–93. doi:10.1073/pnas.83.12.4489. PMC 323759. PMID 3012569.
Didier DK, Schiffenbauer J, Shuman S et al. (1986). "Characterization of two distinct DR beta chain alleles at the beta III locus of the DR5 haplotype: beta III alleles are highly conserved.". J. Immunol. 137 (8): 2627–31. PMID 3020126.
Young JA, Wilkinson D, Bodmer WF, Trowsdale J (1987). "Sequence and evolution of HLA-DR7- and -DRw53-associated beta-chain genes.". Proc. Natl. Acad. Sci. U.S.A. 84 (14): 4929–33. doi:10.1073/pnas.84.14.4929. PMC 305220. PMID 3110774.
Horn GT, Bugawan TL, Long CM et al. (1988). "Sequence analysis of HLA class II genes from insulin-dependent diabetic individuals.". Hum. Immunol. 21 (4): 249–63. doi:10.1016/0198-8859(88)90034-1. PMID 3372263.
Gorski J, Mach B (1986). "Polymorphism of human Ia antigens: gene conversion between two DR beta loci results in a new HLA-D/DR specificity.". Nature 322 (6074): 67–70. doi:10.1038/322067a0. PMID 3459965.
Gregersen PK, Moriuchi T, Karr RW et al. (1987). "Polymorphism of HLA-DR beta chains in DR4, -7, and -9 haplotypes: implications for the mechanisms of allelic variation.". Proc. Natl. Acad. Sci. U.S.A. 83 (23): 9149–53. doi:10.1073/pnas.83.23.9149. PMC 387092. PMID 3466180.
Bell JI, Denney D, Foster L et al. (1987). "Allelic variation in the DR subregion of the human major histocompatibility complex.". Proc. Natl. Acad. Sci. U.S.A. 84 (17): 6234–8. doi:10.1073/pnas.84.17.6234. PMC 299045. PMID 3476943.
Andrieu JM, Even P, Venet A (1986). "AIDS and related syndromes as a viral-induced autoimmune disease of the immune system: an anti-MHC II disorder. Therapeutic implications.". AIDS research 2 (3): 163–74. doi:10.1089/aid.1.1986.2.163. PMID 3489470.

PDB gallery

1a6a: THE STRUCTURE OF AN INTERMEDIATE IN CLASS II MHC MATURATION: CLIP BOUND TO HLA-DR3

1d5m: X-RAY CRYSTAL STRUCTURE OF HLA-DR4 COMPLEXED WITH PEPTIDE AND SEB

1d5x: X-RAY CRYSTAL STRUCTURE OF HLA-DR4 COMPLEXED WITH DIPEPTIDE MIMETIC AND SEB

1d5z: X-RAY CRYSTAL STRUCTURE OF HLA-DR4 COMPLEXED WITH PEPTIDOMIMETIC AND SEB

1d6e: CRYSTAL STRUCTURE OF HLA-DR4 COMPLEX WITH PEPTIDOMIMETIC AND SEB

1j8h: Crystal Structure of a Complex of a Human alpha/beta-T cell Receptor, Influenza HA Antigen Peptide, and MHC Class II Molecule, HLA-DR4

2seb: X-RAY CRYSTAL STRUCTURE OF HLA-DR4 COMPLEXED WITH A PEPTIDE FROM HUMAN COLLAGEN II

Surface antigens

Major histocompatibility complex/
Human leukocyte antigen

MHC class I	HLA-A HLA-B HLA-C HLA-E HLA-F HLA-G

MHC class II	HLA-DM α β HLA-DO α β HLA-DP α1 β1 HLA-DQ α1 α2 β1 β2 β3 HLA-DR α β1 β3 β4 β5 Minor histocompatibility antigen

Other

Index of the immune system

Description	Physiology cells autoantigens autoantibodies complement surface antigens IG receptors

Disease	Allergies Immunodeficiency Immunoproliferative immunoglobulin disorders Hypersensitivity and autoimmune disorders Neoplasms and cancer

Treatment	Procedures Drugs antihistamines immunostimulants immunosuppressants monoclonal antibodies

HLA-DRB3 (gene)

Function

Gene structure and polymorphisms

Gene expression

See also

References

Further reading