Cited by 632Wnt/β-catenin signaling in development and cancerSignaling Pathways in DiseaseUbiquitin and proteasome pathways

β-Catenin destruction complex: insights and questions from a structural perspective

Kimelman, D, Xu, W·2006·Oncogene

Abstract

At the heart of the canonical Wnt signaling pathway is the beta-catenin destruction complex, which functions in the absence of Wnt signaling to keep the cytosolic and nuclear levels of beta-catenin very low by promoting the phosphorylation and ubiquitination of beta-catenin. Structural studies, combined with other experimental approaches, have begun to provide important insights into the mechanism of the destruction complex. We suggest a working model for the destruction complex based on the existing structural and experimental data, and focus on the questions that this model and other studies have raised about the function of the complex in both the normal and Wnt-inhibited states.

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Crossref · 10.1038/sj.onc.1210055

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72 of 72 references verified0 citation errors · 0 not checkable

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  • β-catenin proteins undergo proteasomal destruction, which is greatly accelerated by the presence of IDRs in addition to the bound ubiquitin signal.

    “Next, the β-catenin proteins undergo proteasomal destruction [259, 260], which is greatly accelerated by the presence of IDRs in addition to the bound ubiquitin signal [262].”
  • Prior to Wnt signaling, the transcription factor β-catenin is maintained at low levels by the β-catenin destruction complex, an assembly of the 852 residue mostly disordered scaffold protein axin, the 2,843 residue massively disordered protein APC, and the three mostly structured proteins β-catenin, CKI-a, and GSK3b.

    “Prior to Wnt signaling, the transcription factor β-catenin is maintained at low levels by the β-catenin destruction complex, which is an assembly of the 852 residue mostly disordered scaffold protein axin, the 2,843 residue massively disordered protein adenomatous polyposis coli (APC), and the three mostly structured proteins β-catenin, casein kinase Ia (CKI-a), and glycogen synthetase kinase 3b (”
  • The two kinases phosphorylate residues within a long IDR at β-catenin's amino terminus.

    “The two kinases phosphorylate residues within a long IDR at β-catenin’s amino terminus [259, 260].”

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Authors
Kimelman, D., & Xu, W.
Affiliations
University of Washington (US)
Corresponding author
Kimelman, D
Venue
Oncogene
Published
2006-12-04
Volume
25
Issue
57
Pages
7482-7491
ISSN
  • 0950-9232 (ISSN-L)
  • 1476-5594
OpenAlex
W2072335762
Cited by
628
References
72
Citations by year
2026: 8 · 2025: 21 · 2024: 23 · 2023: 27 · 2022: 41 · 2021: 52 · 2020: 19 · 2019: 25 · 2018: 37 · 2017: 40 · 2016: 28 · 2015: 36 · 2014: 51 · 2013: 33 · 2012: 40
FWCI
1.99
Type
journal article
Language
en
Open access
closed
Locations
  • Oncogene (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health
  • National Cancer Institute (CA 90351, R01CA090351)
  • Eunice Kennedy Shriver National Institute of Child Health and Human Development (R01HD027262, HD27262)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Wnt/β-catenin signaling in development and cancer
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Signaling Pathways in Disease
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Ubiquitin and proteasome pathways
Keywords
β-catenin destruction complex, Wnt/β-catenin signaling, β-catenin phosphorylation, β-catenin ubiquitination, protein complex structure, Wnt signaling inhibition
MeSH terms
Animals, Cell Nucleus, Colonic Neoplasms, Cytosol, Humans, Models, Biological, Phosphorylation, Protein Conformation, Stem Cells, Ubiquitin, beta Catenin

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