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Proc Natl Acad Sci U S A. 2002 Oct 29;99(22):14189-94. Epub 2002 Oct 21.

JLP: A scaffolding protein that tethers JNK/p38MAPK signaling modules and transcription factors.

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  • 1Fels Institute for Cancer Research and Molecular Biology, School of Medicine, Temple University, Philadelphia, PA 19140, USA.

Abstract

Extracellular signals are transduced into cells through mitogen-activated protein kinases (MAPKs), which are activated by their upstream kinases. Recently, families of scaffolding proteins have been identified to tether specific combinations of these kinases along specific signaling pathways. Here we describe a protein, JLP (c-Jun NH2-terminal kinase-associated leucine zipper protein), which acts as a scaffolding protein to bring together Max and c-Myc along with JNK (c-Jun NH2-terminal kinase) and p38MAPK, as well as their upstream kinases MKK4 (MAPK kinase 4) and MEKK3 (MAPK kinase kinase 3). Thus, JLP defines a family of scaffolding proteins that bring MAPKs and their target transcription factors together for the execution of specific signaling pathways.

PMID:
12391307
[PubMed - indexed for MEDLINE]
PMCID:
PMC137859
Free PMC Article

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