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The PHD motif of Map3k1 activates cytokine-dependent MAPK signaling.


ABSTRACT: We generated a mutation in the gene encoding mitogen-activated protein kinase kinase kinase 1 (Map3k1) that results in a protein with an inactive plant homeodomain (PHD). Map3k1(mPHD) cells are defective in cytokine-mediated MAPK signaling. Protein array identified transforming growth factor (TGF-β)-activated kinase 1 binding protein 1 (Tab1) as a PHD substrate. The Map3k1 PHD transfers Lys63-linked poly-ubiquitin onto Tab1 to activate MAPKs.

SUBMITTER: Gallagher E 

PROVIDER: S-EPMC4905292 | biostudies-other | 2015 Jul-Sep

REPOSITORIES: biostudies-other

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