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Structural highlights

Function

RIPK1_HUMAN Serine-threonine kinase which transduces inflammatory and cell-death signals (programmed necrosis) following death receptors ligation, activation of pathogen recognition receptors (PRRs), and DNA damage. Upon activation of TNFR1 by the TNF-alpha family cytokines, TRADD and TRAF2 are recruited to the receptor. Ubiquitination by TRAF2 via 'Lys-63'-link chains acts as a critical enhancer of communication with downstream signal transducers in the mitogen-activated protein kinase pathway and the NF-kappa-B pathway, which in turn mediate downstream events including the activation of genes encoding inflammatory molecules. Polyubiquitinated protein binds to IKBKG/NEMO, the regulatory subunit of the IKK complex, a critical event for NF-kappa-B activation. Interaction with other cellular RHIM-containing adapters initiates gene activation and cell death. RIPK1 and RIPK3 association, in particular, forms a necrosis-inducing complex.^{[1] [2] [3]}

See Also

• Serine/threonine protein kinase 3D structures

References

1. ↑ Holler N, Zaru R, Micheau O, Thome M, Attinger A, Valitutti S, Bodmer JL, Schneider P, Seed B, Tschopp J. Fas triggers an alternative, caspase-8-independent cell death pathway using the kinase RIP as effector molecule. Nat Immunol. 2000 Dec;1(6):489-95. PMID:11101870 doi:10.1038/82732
2. ↑ Cho YS, Challa S, Moquin D, Genga R, Ray TD, Guildford M, Chan FK. Phosphorylation-driven assembly of the RIP1-RIP3 complex regulates programmed necrosis and virus-induced inflammation. Cell. 2009 Jun 12;137(6):1112-23. doi: 10.1016/j.cell.2009.05.037. PMID:19524513 doi:10.1016/j.cell.2009.05.037
3. ↑ He S, Wang L, Miao L, Wang T, Du F, Zhao L, Wang X. Receptor interacting protein kinase-3 determines cellular necrotic response to TNF-alpha. Cell. 2009 Jun 12;137(6):1100-11. doi: 10.1016/j.cell.2009.05.021. PMID:19524512 doi:10.1016/j.cell.2009.05.021
4. ↑ Patel S, Webster JD, Varfolomeev E, Kwon YC, Cheng JH, Zhang J, Dugger DL, Wickliffe KE, Maltzman A, Sujatha-Bhaskar S, Bir Kohli P, Ramaswamy S, Deshmukh G, Liederer BM, Fong R, Hamilton G, Lupardus P, Caplazi P, Lee WP, van Lookeren Campagne M, Johnson A, McKenzie BS, Junttila MR, Newton K, Vucic D. RIP1 inhibition blocks inflammatory diseases but not tumor growth or metastases. Cell Death Differ. 2019 May 17. pii: 10.1038/s41418-019-0347-0. doi:, 10.1038/s41418-019-0347-0. PMID:31101885 doi:http://dx.doi.org/10.1038/s41418-019-0347-0