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Function

Transcription factor that plays a critical role in innate immunity by activating expression of type I interferon (IFN) IFNA and INFB and inflammatory cytokines downstream of endolysosomal toll-like receptors TLR7, TLR8 and TLR9 (PubMed:11303025, PubMed:15695821, PubMed:22412986, PubMed:25326418, PubMed:32433612). Regulates the transcription of type I IFN genes (IFN-alpha and IFN-beta) and IFN-stimulated genes (ISG) by binding to an interferon-stimulated response element (ISRE) in their promoters (By similarity). Can efficiently activate both the IFN-beta (IFNB) and the IFN-alpha (IFNA) genes and mediate their induction downstream of the TLR-activated, MyD88-dependent pathway (By similarity). Key transcription factor regulating the IFN response during SARS-CoV-2 infection (PubMed:33440148).

Involvement in disease

Inflammatory bowel disease 14

IBD14

A chronic, relapsing inflammation of the gastrointestinal tract with a complex etiology. It is subdivided into Crohn disease and ulcerative colitis phenotypes. Crohn disease may affect any part of the gastrointestinal tract from the mouth to the anus, but most frequently it involves the terminal ileum and colon. Bowel inflammation is transmural and discontinuous; it may contain granulomas or be associated with intestinal or perianal fistulas. In contrast, in ulcerative colitis, the inflammation is continuous and limited to rectal and colonic mucosal layers; fistulas and granulomas are not observed. Both diseases include extraintestinal inflammation of the skin, eyes, or joints.

None

Disease susceptibility is associated with variants affecting the gene represented in this entry.

Systemic lupus erythematosus 10

SLEB10

A chronic, relapsing, inflammatory, and often febrile multisystemic disorder of connective tissue, characterized principally by involvement of the skin, joints, kidneys and serosal membranes. It is of unknown etiology, but is thought to represent a failure of the regulatory mechanisms of the autoimmune system. The disease is marked by a wide range of system dysfunctions, an elevated erythrocyte sedimentation rate, and the formation of LE cells in the blood or bone marrow.

None

Disease susceptibility is associated with variants affecting the gene represented in this entry.

Rheumatoid arthritis

RA

An inflammatory disease with autoimmune features and a complex genetic component. It primarily affects the joints and is characterized by inflammatory changes in the synovial membranes and articular structures, widespread fibrinoid degeneration of the collagen fibers in mesenchymal tissues, and by atrophy and rarefaction of bony structures.

None

Disease susceptibility is associated with variants affecting the gene represented in this entry.

Post-translational modifications

Phosphorylation of serine and threonine residues by IKBKB in a C-terminal autoinhibitory region, stimulates dimerization, transport into the nucleus, assembly with the coactivator CBP/EP300 and initiation of transcription.

'Lys-63'-linked polyubiquitination by TRAF6 is required for activation.

Sequence similarities

Belongs to the IRF family.

Cellular localization

  • Cytoplasm
  • Nucleus
  • Shuttles between the nucleus and the cytoplasm: upon activation by the TLR adapter MYD88 and subsequent phosphorylation, translocates to the nucleus.

Alternative names

Interferon regulatory factor 5, IRF-5, IRF5

Target type

Proteins

Primary research area

Immunology & Infectious Disease

Molecular weight

54943Da

We found 2 products in 1 category

Primary Antibodies

Search our catalogue for 'IRF5' (2)

Products

ab181553

Anti-IRF5 antibody [EPR17067]

Recombinant
RabMAb
KO Validated

ab231163

Anti-IRF5 antibody [EPR17067] - BSA and Azide free

Recombinant
RabMAb
KO Validated