Mol Cell. 2000 Apr;5(4):649-58.

TAB2, a novel adaptor protein, mediates activation of TAK1 MAPKKK by linking TAK1 to TRAF6 in the IL-1 signal transduction pathway.

Takaesu G, Kishida S, Hiyama A, Yamaguchi K, Shibuya H, Irie K, Ninomiya-Tsuji J, Matsumoto K.

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Department of Molecular Biology, Graduate School of Science, Nagoya University and CREST, Japan.

Abstract

The TAK1 MAPKKK mediates activation of JNK and NF-KB in the IL-1-activated signaling pathway. Here we report the identification of TAB2, a novel intermediate in the IL-1 pathway that functionally links TAK1 to TRAF6. Expression of TAB2 induces JNK and NF-kappaB activation, whereas a dominant-negative mutant TAB2 impairs their activation by IL-1. IL-1 stimulates translocation of TAB2 from the membrane to the cytosol where it mediates the IL-1-dependent association of TAK1 with TRAF6. These results define TAB2 as an adaptor linking TAK1 and TRAF6 and as a mediator of TAK1 activation in the IL-1 signaling pathway.

PMID:: 10882101; [PubMed - indexed for MEDLINE]

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Research Support, Non-U.S. Gov't

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GENBANK/AF241230

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TAB2, a novel adaptor protein, mediates activation of TAK1 MAPKKK by linking TAK...
TAB2, a novel adaptor protein, mediates activation of TAK1 MAPKKK by linking TAK1 to TRAF6 in the IL-1 signal transduction pathway.
Mol Cell. 2000 Apr ;5(4):649-58.

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