UniProt Summary: IFN-induced antiviral protein which acts as an inhibitor of cellular as well as viral processes, cell migration, proliferation, signaling, and viral replication. Enhances MAVS- mediated host antiviral responses by serving as an adapter bridging TBK1 to MAVS which leads to the activation of TBK1 and phosphorylation of IRF3 and phosphorylated IRF3 translocates into nucleus to promote antiviral gene transcription. Exihibits an antiproliferative activity via the up-regulation of cell cycle negative regulators CDKN1A/p21 and CDKN1B/p27. Normally, CDKN1B/p27 turnover is regulated by COPS5, which binds CDKN1B/p27 in the nucleus and exports it to the cytoplasm for ubiquitin- dependent degradation. IFIT3 sequesters COPS5 in the cytoplasm, thereby increasing nuclear CDKN1B/p27 protein levels. Upregulates CDKN1A/p21 by downregulating MYC, a repressor of CDKN1A/p21. Can negatively regulate the apoptotic effects of IFIT2. {ECO:0000269|PubMed:17050680, ECO:0000269|PubMed:20686046, ECO:0000269|PubMed:21190939, ECO:0000269|PubMed:21642987, ECO:0000269|PubMed:21813773}.
Pfam DomainsGO Terms
Pfam Domains
No Pfam Domain information is available for this gene.
GO Terms
cellular response to interferon-alpha
response to interferon-alpha
type I interferon signaling pathway
cellular response to type I interferon
response to type I interferon
defense response to virus
response to virus
cytokine-mediated signaling pathway
negative regulation of cell population proliferation
molecular function
innate immune response
negative regulation of apoptotic process
negative regulation of programmed cell death
defense response to other organism
negative regulation of cell death
cellular response to cytokine stimulus
identical protein binding
immune effector process
response to cytokine
mitochondrion
response to other organism
response to external biotic stimulus
response to biotic stimulus
defense response
regulation of apoptotic process
regulation of programmed cell death
regulation of cell population proliferation
regulation of cell death
immune response
CRISPR Data
Compound HitMost Correlated Genes in ChemogenomicsTissues where Essential in the Avana Dataset (DepMap 20Q1)