TBK1/IKK epsilon bind to TANK:TRAF3/TRAF6 complex followed by their activation

Stable Identifier
Reaction [transition]
Gallus gallus
Related Species
Infectious bronchitis virus
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TBK1 and IKK epsilon(IKKi) are described as essential regulators of pathogen-triggered IFN gene activation through the direct phosphorylation of IFN regulatory factors.

Embryonic fibroblast cells from TBK1-deficient mice show decreased IRF3 activation and IFN induction by poly IC, while IKKi-deficient cells show normal IRF3 activation. However, the activation of IRF3 is totally abolished in TBK1 and IKKi double-deficient cells, indicating that the functions of TBK1 and IKKi are redundant in mouse embryo fibroblast cells.[Hemmi et al 2004].

TBK1/IKKi interact with SIKE (Suppressor of IKK epsilon), which was shown to act as an inhibitor of TBK1/IKKi-mediated type I IFN production, but not NF-kB activation signaling[Huang J et al 2005].

Predicted chicken TBK1and IKK epsilon show 86% and 68% amino acid sequence identity to their human counterparts respectively.

Literature References
PubMed ID Title Journal Year
12692549 IKKepsilon and TBK1 are essential components of the IRF3 signaling pathway

Fitzgerald, KA, McWhirter, SM, Faia, KL, Rowe, DC, Latz, E, Golenbock, DT, Coyle, AJ, Liao, SM, Maniatis, T

Nat Immunol 2003
17047224 Regulation and function of IKK and IKK-related kinases

Hacker, H, Karin, M

Sci STKE 2006
17332413 Multiple functions of the IKK-related kinase IKKepsilon in interferon-mediated antiviral immunity

Tenoever, BR, Ng, SL, Chua, MA, McWhirter, SM, Garcia-Sastre, A, Maniatis, T

Science 2007
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