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Details on Person RIG‑I‑like receptors (RLRs) recognize RNAs from various RNA ...
| Class:Id | Summation:9705127 |
|---|---|
| _displayName | RIG‑I‑like receptors (RLRs) recognize RNAs from various RNA ... |
| _timestamp | 2024-11-05 11:22:08 |
| created | [InstanceEdit:9705126] Shamovsky, Veronica, 2020-10-21 |
| literatureReference | [LiteratureReference:2408458] Molecular basis of Tank-binding kinase 1 activation by transautophosphorylation [LiteratureReference:5362581] Crystal structure and mechanism of activation of TANK-binding kinase 1 [LiteratureReference:9705140] Effects of ALS-associated TANK binding kinase 1 mutations on protein-protein interactions and kinase activity [LiteratureReference:5362611] Structure and ubiquitination-dependent activation of TANK-binding kinase 1 [LiteratureReference:9705131] Functionally distinct effects of the C-terminal regions of IKKε and TBK1 on type I IFN production [LiteratureReference:9705328] IKKε-mediated tumorigenesis requires K63-linked polyubiquitination by a cIAP1/cIAP2/TRAF2 E3 ubiquitin ligase complex [LiteratureReference:434099] IFN-regulatory factor 3-dependent gene expression is defective in Tbk1-deficient mouse embryonic fibroblasts [LiteratureReference:9716152] Activation of TBK1 and IKKvarepsilon kinases by vesicular stomatitis virus infection and the role of viral ribonucleoprotein in the development of interferon antiviral immunity [LiteratureReference:9716140] Quantitative Proteomics Identified TTC4 as a TBK1 Interactor and a Positive Regulator of SeV-Induced Innate Immunity |
| modified | [InstanceEdit:9713625] Shamovsky, Veronica, 2021-01-27 [InstanceEdit:9715437] Shamovsky, Veronica, 2021-02-17 [InstanceEdit:9716144] Shamovsky, Veronica, 2021-02-19 [InstanceEdit:9927237] Shamovsky, Veronica, 2024-11-05 |
| text | RIG‑I‑like receptors (RLRs) recognize RNAs from various RNA viruses and activate the mitochondrial antiviral‑signaling protein (MAVS, IPS-1) adaptor protein. MAVS recruits the serine/threonine protein kinase TBK1 (tumor necrosis factor (TNF) receptor‑associated factor (TRAF) family member‑associated NF‑κB activator (TANK)‑binding kinase 1) and/or its close homolog inhibitor‑kappa‑B kinase (IKK) epsilon (IKKε or IKBKE) via TRAFs. Imunoprecipitation combined with mass spectrometry (MS)-based proteomic assays identified interactors of endogenous TBK1, such as TANK and NAP1, in SeV or HHV-1 (HSV-1)-infected human acute monocytic leukemia cells (THP‐1) cells (Shang L et al. 2018). TBK1 and IKBKE trigger phosphorylation of interferon regulatory factor 3 (IRF3) and IRF7 and subsequent expression of type I interferons (IFNs; IFN‑α/β). Both TBK1 and IKBKE directly phosphorylate IRF3 and IRF7 targeting identical residues within the C-terminal signal-responsive domain (McWhirter SM et al. 2004; tenOever BR et al. 2004). Type I IFNs can induce the expression of numerous antiviral genes called interferon‑stimulated genes (ISGs). Structural studies revealed a dimeric assembly of TBK1 that is stabilized by an extensive network of interactions among the kinase, ubiquitin‑like (ULD) and scaffold/dimerization (SDD) domains of TBK1 (Larabi A et al. 2013; Tu D et al. 2013). IKBKE was also reported to form dimers (Nakatsu Y et al. 2014). Even though the contacts that stabilize the TBK1 dimer are largely conserved in IKKε (IKBKE), studies reported differences in activation mechanisms between TBK1 and IKBKE (Larabi A et al. 2013; Tu D et al. 2013; Nakatsu Y et al. 2014). While the C‑terminal region was required for dimerization of IKBKE and downstream signaling, a C‑terminally truncated fragment of TBK1 formed a homodimer both in vitro and in vivo and was able to induce IRF3 phosphorylation (Nakatsu Y et al. 2014). Mutants that interfere with TBK1 dimerization showed significantly reduced trans‑autophosphorylation upon expression in human embryonic kidney 293 (HEK293) cells (Larabi A et al. 2013). An intact TBK1 dimer was modified by K63‑linked polyubiquitination on lysine 30 and lysine 401, and these modifications were required for TBK1 activation in HEK293 cells (Tu D et al. 2013). Similar findings were reported for IKBKE (Zhou AY et al. 2013). Further, interferon‑β expression was ablated in TBK1‑/‑ mouse embryo fibroblasts (MEFs) cells reconstituted with dimerization defective TBK1 mutants (Tu D et al. 2013). Structural studies suggest that TBK1 dimerization is required for activation via transautophosphorylation at Ser172 of dimeric TBK1 (Larabi A et al. 2013; Tu D et al. 2013; Ma X et al. 2012). However, familial amyotrophic lateral sclerosis (ALS)‑associated TBK1 mutations in ULD or SDD displayed defects in dimerization of TBK1 without losing kinase activity (Ye J et al. 2019). These observations suggest that TBK1 dimerization is not required for kinase activation. Rather, dimerization seems to increase protein stability and enables efficient kinase‑substrate interactions (Ye J et al. 2019). |
| (summation) | [Reaction:9705137] TBK1 or IKBKE forms homodimers [Homo sapiens] |
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No pathways have been reviewed or authored by RIG‑I‑like receptors (RLRs) recognize RNAs from various RNA ... (9705127)
