Cited by 218Heat shock proteins researchUbiquitin and proteasome pathwaysAutophagy in Disease and Therapy

CHIP: a quality-control E3 ligase collaborating with molecular chaperones

Murata, Shigeo, Chiba, Tomoki, Tanaka, Keiji·2003·The International Journal of Biochemistry & Cell Biology

Abstract

It is notable that both the chaperone and ubiquitin-proteasome systems are required for removal of aberrant cellular proteins to ensure protein homeostasis in cells. However, the entity that links the two systems had remained elusive. Carboxyl-terminus of Hsc70 interacting protein (CHIP), originally identified as a co-chaperone of Hsc70, has both a tetratricopeptide repeat (TPR) motif and a U-box domain. The TPR motif associates with Hsc70 and Hsp90, while the U-box domain executes a ubiquitin ligase activity. Thus, CHIP is an ideal molecule acting as a protein quality-control ubiquitin ligase that selectively leads abnormal proteins recognized by molecular chaperones to degradation by the proteasome. Accumulating evidence from in vitro studies indicates that this is apparently the case. Here, we present and discuss several unresolved but critical issues related to the molecular mechanism and in vivo roles of CHIP.

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Crossref · 10.1016/s1357-2725(02)00394-1

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  • Molecular chaperones Hsp70 and Hsp90 can recruit the co-chaperone E3 ligase CHIP, leading to ubiquitination and degradation of chaperone-bound client proteins.

    “However, molecular chaperones Hsp70 and Hsp90 can also recruit the co-chaperone E3 ligase CHIP (C-terminus of Hsp70 interacting protein), which leads to ubiquitination and degradation of the chaperone-bound client proteins [56–59].”

    From Advances in targeted degradation of endogenous proteins (2019) · cites this paper as [58]

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Authors
Murata, S., Chiba, T., & Tanaka, K.
Affiliations
Tokyo Metropolitan Institute of Medical Science (JP)
Corresponding author
Murata, Shigeo
Venue
The International Journal of Biochemistry & Cell Biology
Publisher
Elsevier BV
Published
2003-05
Volume
35
Issue
5
Pages
572-578
ISSN
1357-2725 (ISSN-L)
OpenAlex
W2069183580
Cited by
218
References
33
Citations by year
2026: 3 · 2025: 2 · 2024: 5 · 2023: 7 · 2022: 6 · 2021: 5 · 2020: 6 · 2019: 7 · 2018: 8 · 2017: 15 · 2016: 7 · 2015: 6 · 2014: 10 · 2013: 9 · 2012: 22
FWCI
0.88
Type
journal article
Language
en
Open access
closed
Locations
  • The International Journal of Biochemistry & Cell Biology (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Heat shock proteins research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Ubiquitin and proteasome pathways
  • Health Sciences › Medicine › Epidemiology › Autophagy in Disease and Therapy
Keywords
CHIP, E3 ubiquitin ligase, molecular chaperones, protein quality control, proteostasis, ubiquitin-proteasome system, HSP90, U-box domain, protein degradation
MeSH terms
Animals, Cysteine Endopeptidases, Humans, Multienzyme Complexes, Protein Denaturation, Protein Folding, Molecular Chaperones, HSP70 Heat-Shock Proteins, Neurodegenerative Diseases, Ubiquitin, Proteasome Endopeptidase Complex, HSC70 Heat-Shock Proteins, Mice

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