PUBLICATION

The KLHL12-Cullin-3 ubiquitin ligase negatively regulates the Wnt-beta-catenin pathway by targeting Dishevelled for degradation

Authors
Angers, S., Thorpe, C.J., Biechele, T.L., Goldenberg, S.J., Zheng, N., Maccoss, M.J., and Moon, R.T.
ID
ZDB-PUB-060323-28
Date
2006
Source
Nature cell biology   8(4): 348-357 (Journal)
Registered Authors
Moon, Randall T., Thorpe, Chris
Keywords
none
MeSH Terms
  • Adaptor Proteins, Signal Transducing/metabolism*
  • Animals
  • Blotting, Western
  • Carrier Proteins/physiology*
  • Cell Cycle Proteins/physiology*
  • Cell Line
  • Chromatography, Affinity
  • Cullin Proteins/physiology*
  • Embryo, Nonmammalian/metabolism
  • Fluorescent Antibody Technique, Indirect
  • Humans
  • Kidney/cytology
  • Microscopy, Fluorescence
  • Phosphoproteins/metabolism*
  • Signal Transduction*
  • Ubiquitin
  • Ubiquitin-Protein Ligases/physiology*
  • Wnt Proteins/metabolism*
  • Xenopus Proteins/physiology*
  • Xenopus laevis/embryology
  • Zebrafish/embryology
  • Zebrafish Proteins/physiology*
  • beta Catenin/metabolism*
PubMed
16547521 Full text @ Nat. Cell Biol.
Abstract
Dishevelled is a conserved protein that interprets signals received by Frizzled receptors. Using a tandem-affinity purification strategy and mass spectrometry we have identified proteins associated with Dishevelled, including a Cullin-3 ubiquitin ligase complex containing the Broad Complex, Tramtrack and Bric a Brac (BTB) protein Kelch-like 12 (KLHL12). This E3 ubiquitin ligase complex is recruited to Dishevelled in a Wnt-dependent manner that promotes its poly-ubiquitination and degradation. Functional analyses demonstrate that regulation of Dishevelled by this ubiquitin ligase antagonizes the Wnt-ss-catenin pathway in cultured cells, as well as in Xenopus and zebrafish embryos. Considered with evidence that the distinct Cullin-1 based SCF(beta-TrCP)complex regulates beta-catenin stability, our data on the stability of Dishevelled demonstrates that two distinct ubiquitin ligase complexes regulate the Wnt-ss-catenin pathway.
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