Tumor necrosis factor (TNF)-mediated kinase cascades: Bifurcation of Nuclear Factor-κB and c-jun N-terminal kinase (JNK/SAPK) pathways at TNF receptor-associated factor 2

作者: H. Y. Song , C. H. Regnier , C. J. Kirschning , D. V. Goeddel , M. Rothe

DOI: 10.1073/PNAS.94.18.9792

关键词: MAP kinase kinase kinaseChemistryKinaseTRAF2Cancer researchTumor Necrosis Factor Receptor-Associated FactorsSignal transductionTNF receptor associated factorNFKB1c-jun

摘要: TNF-induced activation of the transcription factor NF-κB and c-jun N-terminal kinase (JNK/SAPK) requires TNF receptor-associated 2 (TRAF2). The NF-κB-inducing (NIK) associates with TRAF2 mediates NF-κB. Herein we show that NIK interacts additional members TRAF family this interaction conserved “WKI” motif within domain. We also investigated role in JNK by TNF. Whereas overexpression potently induced activation, it failed to stimulate activation. A kinase-inactive mutant was a dominant negative inhibitor but did not suppress TNF- or TRAF2-induced Thus, is bifurcation point two cascades leading JNK, respectively.

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