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Crystal structure of murine NF-kappaB inducing kinase (NIK) bound to Imidazobenzoxepin Compound 3
Structural highlights
FunctionM3K14_MOUSE Lymphotoxin beta-activated kinase which seems to be exclusively involved in the activation of NF-kappa-B and its transcriptional activity. Promotes proteolytic processing of NFKB2/P100, which leads to activation of NF-kappa-B via the non-canonical pathway. Could act in a receptor-selective manner.[1] Publication Abstract from PubMedWe report here structure-guided optimization of a novel series of NF-kappaB inducing kinase (NIK) inhibitors. Starting from a modestly potent, low molecular weight lead, activity was improved by designing a type 11/2 binding mode that accessed a back pocket past the methionine-471 gatekeeper. Divergent binding modes in NIK and PI3K were exploited to dampen PI3K inhibition while maintaining NIK inhibition within these series. Potent compounds were discovered that selectively inhibit the nuclear translocation of NF-kappaB2 (p52/REL-B) but not canonical NF-kappaB1 (REL-A/p50). Structure-Based Design of Tricyclic NF-kappaB Inducing Kinase (NIK) Inhibitors That Have High Selectivity over Phosphoinositide-3-kinase (PI3K).,Castanedo GM, Blaquiere N, Beresini M, Bravo B, Brightbill H, Chen J, Cui HF, Eigenbrot C, Everett C, Feng J, Godemann R, Gogol E, Hymowitz S, Johnson A, Kayagaki N, Kohli PB, Knuppel K, Kraemer J, Kruger S, Loke P, McEwan P, Montalbetti C, Roberts DA, Smith M, Steinbacher S, Sujatha-Bhaskar S, Takahashi R, Wang X, Wu LC, Zhang Y, Staben ST J Med Chem. 2017 Jan 12. doi: 10.1021/acs.jmedchem.6b01363. PMID:28005357[2] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. References
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