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Function

Associates with IFNGR1 to form a receptor for the cytokine interferon gamma (IFNG) (PubMed:7615558, PubMed:7673114, PubMed:8124716). Ligand binding stimulates activation of the JAK/STAT signaling pathway (PubMed:15356148, PubMed:7673114, PubMed:8124716). Required for signal transduction in contrast to other receptor subunit responsible for ligand binding (PubMed:7673114).

Involvement in disease

Immunodeficiency 28

IMD28

A form of Mendelian susceptibility to mycobacterial disease, a rare condition caused by impairment of interferon-gamma mediated immunity. It is characterized by predisposition to illness caused by moderately virulent mycobacterial species, such as Bacillus Calmette-Guerin (BCG) vaccine, environmental non-tuberculous mycobacteria, and by the more virulent Mycobacterium tuberculosis. Other microorganisms rarely cause severe clinical disease in individuals with susceptibility to mycobacterial infections, with the exception of Salmonella which infects less than 50% of these individuals. Clinical outcome severity depends on the degree of impairment of interferon-gamma mediated immunity. Some patients die of overwhelming mycobacterial disease with lepromatous-like lesions in early childhood, whereas others develop, later in life, disseminated but curable infections with tuberculoid granulomas. IMD28 is an autosomal recessive disease that manifests early in life, with severe, often fatal, infection.

None

The disease is caused by variants affecting the gene represented in this entry.

Sequence similarities

Belongs to the type II cytokine receptor family.

Tissue specificity

Expressed in T-cells (at protein level).

Cellular localization

  • Cell membrane
  • Single-pass type I membrane protein
  • Cytoplasmic vesicle membrane
  • Single-pass type I membrane protein
  • Golgi apparatus membrane
  • Single-pass type I membrane protein
  • Endoplasmic reticulum membrane
  • Single-pass type I membrane protein
  • Cytoplasm
  • Has low cell surface expression and high cytoplasmic expression in T cells. The bias towards cytoplasmic expression may be due to ligand-independent receptor internalization and recycling.

Alternative names

IFNGT1, IFNGR2, Interferon gamma receptor 2, IFN-gamma receptor 2, IFN-gamma-R2, Interferon gamma receptor accessory factor 1, Interferon gamma receptor beta-chain, Interferon gamma transducer 1, AF-1, IFN-gamma-R-beta

Target type

Proteins

Primary research area

Immuno-oncology

Molecular weight

37806Da