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The Ubiquitin-Proteasome Proteolytic Pathway: Destruction for the Sake of Construction

Glickman, Michael H., Ciechanover, Aaron·2002·Physiological Reviews

Abstract

Between the 1960s and 1980s, most life scientists focused their attention on studies of nucleic acids and the translation of the coded information. Protein degradation was a neglected area, considered to be a nonspecific, dead-end process. Although it was known that proteins do turn over, the large extent and high specificity of the process, whereby distinct proteins have half-lives that range from a few minutes to several days, was not appreciated. The discovery of the lysosome by Christian de Duve did not significantly change this view, because it became clear that this organelle is involved mostly in the degradation of extracellular proteins, and their proteases cannot be substrate specific. The discovery of the complex cascade of the ubiquitin pathway revolutionized the field. It is clear now that degradation of cellular proteins is a highly complex, temporally controlled, and tightly regulated process that plays major roles in a variety of basic pathways during cell life and death as well as in health and disease. With the multitude of substrates targeted and the myriad processes involved, it is not surprising that aberrations in the pathway are implicated in the pathogenesis of many diseases, certain malignancies, and neurodegeneration among them. Degradation of a protein via the ubiquitin/proteasome pathway involves two successive steps: 1) conjugation of multiple ubiquitin moieties to the substrate and 2) degradation of the tagged protein by the downstream 26S proteasome complex. Despite intensive research, the unknown still exceeds what we currently know on intracellular protein degradation, and major key questions have remained unsolved. Among these are the modes of specific and timed recognition for the degradation of the many substrates and the mechanisms that underlie aberrations in the system that lead to pathogenesis of diseases.

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Crossref · 10.1152/physrev.00027.2001

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Metadata

Authors
Glickman, M. H., & Ciechanover, A.
Venue
Physiological Reviews
Published
2002-04-01
Volume
82
Issue
2
Pages
373-428
ISSN
  • 0031-9333 (ISSN-L)
  • 1522-1210
OpenAlex
W2150123812
Cited by
4,237
References
18
FWCI
10.30
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: The Ubiquitin-Proteasome Proteolytic Pathway: Destruction for the Sake of Construction. https://app.cochat.ai/papers/10.1152/physrev.00027.2001
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Glickman, M. H., & Ciechanover, A. (2002). The Ubiquitin-Proteasome Proteolytic Pathway: Destruction for the Sake of Construction. Physiological Reviews. https://doi.org/10.1152/physrev.00027.2001

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