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FEBS Lett. 2001 Feb 9;490(1-2):65-9.

Conserved role for 14-3-3epsilon downstream of type I TGFbeta receptors.

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  • 1Department of Microbiology and Immunology, College of Veterinary Medicine, Cornell University, 14853-6401, Ithaca, NY, USA.

Abstract

Schistosoma mansoni receptor kinase-1 (SmRK1) is a divergent type I transforming growth factor beta (TGFbeta) receptor on the surface of adult parasites. Using the intracellular domain of SmRK1 as bait in a yeast two-hybrid screen we identified an interaction with S. mansoni 14-3-3epsilon. The interaction which is phosphorylation-dependent is not specific to schistosomes since 14-3-3epsilon also binds to TbetaRI, the human type I TGFbeta receptor. 14-3-3epsilon enhances TGFbeta-mediated signaling by TbetaRI and is the first TbetaRI-interacting non-Smad protein identified that positively regulates this receptor. The interaction of 14-3-3epsilon with schistosome and human TbetaRI suggests a conserved, but previously unappreciated, role for this protein in TGFbeta signaling pathways.

PMID:
11172812
[PubMed - indexed for MEDLINE]
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