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. 1995 Dec 22;270(5244):2008-11.
doi: 10.1126/science.270.5244.2008.

Identification of a member of the MAPKKK family as a potential mediator of TGF-beta signal transduction

K Yamaguchi  1 , K Shirakabe, H Shibuya, K Irie, I Oishi, N Ueno, T Taniguchi, E Nishida, K Matsumoto
Affiliations

Identification of a member of the MAPKKK family as a potential mediator of TGF-beta signal transduction

K Yamaguchi et al. Science. .

Abstract

The mitogen-activated protein kinase (MAPK) pathway is a conserved eukaryotic signaling module that converts receptor signals into various outputs. MAPK is activated through phosphorylation by MAPK kinase (MAPKK), which is first activated by MAPKK kinase (MAPKKK). A genetic selection based on a MAPK pathway in yeast was used to identify a mouse protein kinase (TAK1) distinct from other members of the MAPKKK family. TAK1 was shown to participate in regulation of transcription by transforming growth factor-beta (TGF-beta). Furthermore, kinase activity of TAK1 was stimulated in response to TGF-beta and bone morphogenetic protein. These results suggest that TAK1 functions as a mediator in the signaling pathway of TGF-beta superfamily members.

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