Evidence map›Paper›PMID 26964885›Full record

ArticleNature communications2016

A unified mechanism for proteolysis and autocatalytic activation in the 20S proteasome.

Eva M Huber, Wolfgang Heinemeyer, Xia Li, Cassandra S Arendt, Mark Hochstrasser, Michael Groll

Open access · goldAbstract read
In one paragraph

Article in Nature communications, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 65 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
65citing papers in PubMed, 1 pooled it
8.2field-weighted citation impact, top 2% 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

65 citing papers in PubMed, 1 synthesis or guideline pooled it, 125 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Article
  4. The pivotal role of β-lactone stereochemistry in the development of SARS-CoV-2 MProtein science : a publication of the Protein Society · 2026
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  5. Review
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  14. Article
  15. Article
  16. Functional 20S Proteasomes in Retroviruses: Evidence in Favor.International journal of molecular sciences · 2024
    Article
  17. Article
  18. Article
  19. Article
  20. Mechanism of autocatalytic activation during proteasome assembly.Nature structural & molecular biology · 2024
    Article

5 more citing papers are in PubMed but not listed here.

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

6 authors at 5 institutions in 2 countries.

Eva M HuberCenter for Integrated Protein Science at the Department Chemie, Lehrstuhl für Biochemie, Technische Universität München, Lichtenbergstrasse 4, 85747 Garching, Germany.
Wolfgang HeinemeyerCenter for Integrated Protein Science at the Department Chemie, Lehrstuhl für Biochemie, Technische Universität München, Lichtenbergstrasse 4, 85747 Garching, Germany.
Xia LiDepartment of Molecular Biophysics and Biochemistry, Yale University, 266 Whitney Avenue, New Haven, Connecticut 06520-8114, USA.
Cassandra S ArendtDepartment of Biochemistry and Molecular Biology, University of Chicago, Chicago, Illinois 60637, USA.
Mark HochstrasserDepartment of Molecular Biophysics and Biochemistry, Yale University, 266 Whitney Avenue, New Haven, Connecticut 06520-8114, USA.
Michael GrollCenter for Integrated Protein Science at the Department Chemie, Lehrstuhl für Biochemie, Technische Universität München, Lichtenbergstrasse 4, 85747 Garching, Germany.
Center for Integrated Protein Science Munich · DETechnical University of Munich · DEUniversity of Chicago · USWhitney Museum of American Art · USYale University · US

Funding

Function and Assembly of Eukaryotic ProteasomesR01GM083050 · NIGMS · YALE UNIVERSITY · PI HOCHSTRASSER, MARK W · 2008 to 2019
$3.8M
Degradation of Short Lived Regulatory Protein in YeastR37GM046904 · NIGMS · YALE UNIVERSITY · PI HOCHSTRASSER, MARK W · 2009 to 2018
$3.6M
DEGRADTION OF SHORT-LIVED REGULATORY PROTEINS IN YEASTR01GM046904 · NIGMS · YALE UNIVERSITY · PI HOCHSTRASSER, MARK W · 1992 to 2020
$3.6M
NIGMS NIH HHS GM046904NIGMS NIH HHS GM083050NIGMS NIH HHS R01 GM046904NIGMS NIH HHS R01 GM083050NIGMS NIH HHS R37 GM046904
6 · The paper itself

Abstract

Biogenesis of the 20S proteasome is tightly regulated. The N-terminal propeptides protecting the active-site threonines are autocatalytically released only on completion of assembly. However, the trigger for the self-activation and the reason for the strict conservation of threonine as the active site nucleophile remain enigmatic. Here we use mutagenesis, X-ray crystallography and biochemical assays to suggest that Lys33 initiates nucleophilic attack of the propeptide by deprotonating the Thr1 hydroxyl group and that both residues together with Asp17 are part of a catalytic triad. Substitution of Thr1 by Cys disrupts the interaction with Lys33 and inactivates the proteasome. Although a Thr1Ser mutant is active, it is less efficient compared with wild type because of the unfavourable orientation of Ser1 towards incoming substrates. This work provides insights into the basic mechanism of proteolysis and propeptide autolysis, as well as the evolutionary pressures that drove the proteasome to become a threonine protease.

Indexed as

ProteolysisAspartic AcidAutolysisCatalysisCatalytic DomainCrystallography, X-RayCysteineLysineMutagenesis, Site-DirectedProteasome Endopeptidase ComplexProtein PrecursorsSaccharomyces cerevisiaeSaccharomyces cerevisiae ProteinsSerineThreonineAspartic AcidCysteineLysineProteasome Endopeptidase ComplexProtein PrecursorsSaccharomyces cerevisiae ProteinsSerineThreonine

Identifiers

PMID26964885
PMCPMC4792962
OpenAlexW2296709801

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.