Cited by 149Ubiquitin and proteasome pathwaysWnt/β-catenin signaling in development and cancerProtein Degradation and Inhibitors

A binding motif for Siah ubiquitin ligase

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House, Colin M., Frew, Ian J., Huang, Huei-Luen, Wiche, Gerhard, Traficante, Nadia, Nice, Edouard, Catimel, Bruno, Bowtell, David D. L.·2003·Proceedings of the National Academy of Sciences

Abstract

The Drosophila SINA (seven in absentia) protein and its mammalian orthologs (Siah, seven in absentia homolog) are RING domain proteins that function in E3 ubiquitin ligase complexes and facilitate ubiquitination and degradation of a wide range of cellular proteins, including β-catenin. Despite these diverse targets, the means by which SINA/Siah recognize substrates or binding proteins has remained unknown. Here we identify a peptide motif (RPVAxVxPxxR) that mediates the interaction of Siah protein with a range of protein partners. Sequence alignment and mutagenesis scanning revealed residues that are important to this interaction. This consensus sequence correctly predicted a high-affinity interaction with a peptide from the cytoskeletal protein plectin-1 (residues 95–117). The unusually high-affinity binding obtained with a 23-residue peptide ( K Dapp = 29 nM with SINA) suggests that it may serve as a useful dominant negative reagent for SINA/Siah proteins.

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Crossref · 10.1073/pnas.0534783100

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Authors
House, C. M., Frew, I. J., Huang, H.-L., Wiche, G., Traficante, N., Nice, E., Catimel, B., & Bowtell, D. D. L.
Affiliations
Peter MacCallum Cancer Centre (AU)
Venue
Proceedings of the National Academy of Sciences
Published
2003-03-07
Volume
100
Issue
6
Pages
3101-3106
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2165179747
Cited by
148
References
38
Citations by year
2026: 3 · 2025: 7 · 2024: 6 · 2023: 2 · 2022: 9 · 2021: 7 · 2020: 5 · 2019: 5 · 2018: 2 · 2017: 6 · 2016: 3 · 2015: 6 · 2014: 4 · 2013: 10 · 2012: 7
FWCI
3.11
Type
journal article
Language
en
Open access
Locations
  • Proceedings of the National Academy of Sciences (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Ubiquitin and proteasome pathways
  • 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 › Protein Degradation and Inhibitors
Keywords
SIAH, Sina, RING domain, E3 ubiquitin ligase, substrate recognition, peptide binding motifs, protein-protein interaction, β-catenin degradation, Drosophila
MeSH terms
Seven in Absentia Proteins, Amino Acid Sequence, Animals, Binding Sites, Calcium-Binding Proteins, Carrier Proteins, Heat-Shock Proteins, Ligases, Molecular Sequence Data, Nuclear Proteins, Recombinant Proteins, Mutagenesis, Conserved Sequence, Sequence Homology, Amino Acid, Amino Acid Motifs, Drosophila Proteins, Ubiquitin-Protein Ligases, Mice, In Vitro Techniques

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