E3 ubiquitin ligase TRAF6 generates free K63 -linked polyubiquitin chains that non-covalently associate with ubiquitin receptors of TAB2/TAB3 regulatory proteins of the TAK1 complex, leading to the activation of the TAK1 kinase.
Adhikari, A, Zeng, W, Chen, ZJ, Pineda, G, Sun, L, Chen, X, Jiang, X, Xia, ZP
ubiquitin-protein transferase activity of ALPK1:ADP-heptose:p-T9-TIFA oligomer:K63-linked pUb-TRAF6 oligomer [cytosol]
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