Evidence map›Paper›PMID 33498876›Full record

ReviewBiomolecules2021

Structural Insights into Substrate Recognition and Processing by the 20S Proteasome.

Indrajit Sahu, Michael H Glickman

Open access · goldAbstract readReview
In one paragraph

Review in Biomolecules, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 41 papers.

0numbers the graph read from it
0cells of the map it votes in
41citing papers in PubMed
4.1field-weighted citation impact, top 5% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

41 citing papers in PubMed, 63 citations in OpenAlex.

  1. ACS chemical neuroscience · 2026
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

2 authors at 1 institution in 1 country.

Indrajit SahuFaculty of Biology, Technion-Israel Institute of Technology, 32000 Haifa, Israel.ORCID 0000-0002-4143-0600
Michael H GlickmanFaculty of Biology, Technion-Israel Institute of Technology, 32000 Haifa, Israel.
Technion – Israel Institute of Technology · IL

Funding

H2020 Marie Skłodowska-Curie Actions 2024849Israel Science Foundation 755/19; 2512/18United States-Israel Binational Science Foundation 2017727
6 · The paper itself

Abstract

Four decades of proteasome research have yielded extensive information on ubiquitin-dependent proteolysis. The archetype of proteasomes is a 20S barrel-shaped complex that does not rely on ubiquitin as a degradation signal but can degrade substrates with a considerable unstructured stretch. Since roughly half of all proteasomes in most eukaryotic cells are free 20S complexes, ubiquitin-independent protein degradation may coexist with ubiquitin-dependent degradation by the highly regulated 26S proteasome. This article reviews recent advances in our understanding of the biochemical and structural features that underlie the proteolytic mechanism of 20S proteasomes. The two outer α-rings of 20S proteasomes provide a number of potential docking sites for loosely folded polypeptides. The binding of a substrate can induce asymmetric conformational changes, trigger gate opening, and initiate its own degradation through a protease-driven translocation mechanism. Consequently, the substrate translocates through two additional narrow apertures augmented by the β-catalytic active sites. The overall pulling force through the two annuli results in a protease-like unfolding of the substrate and subsequent proteolysis in the catalytic chamber. Although both proteasomes contain identical β-catalytic active sites, the differential translocation mechanisms yield distinct peptide products. Nonoverlapping substrate repertoires and product outcomes rationalize cohabitation of both proteasome complexes in cells.

Indexed as

CatalysisCatalytic DomainCytoplasmHumansIntrinsically Disordered ProteinsMicroscopy, Atomic ForceOxidative StressPeptidesProteasome Endopeptidase ComplexProtein BindingProtein ConformationProtein DomainsProtein Processing, Post-TranslationalProteolysisProteomeSubstrate SpecificityATP dependent 26S proteaseIntrinsically Disordered ProteinsPeptidesProteasome Endopeptidase ComplexProteomeUbiquitin20S proteasomeenzyme functional cycleintrinsically disordered proteinsoxidative stresspeptidespeptidomeprotein degradationproteome

Identifiers

PMID33498876
PMCPMC7910952
OpenAlexW3125588852

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.