Evidence map›Paper›PMID 41198955›Full record

ArticleNature structural & molecular biology2025

Structural landscape of the degrading 26S proteasome reveals conformation-specific binding of TXNL1.

Connor Arkinson, Christine L Gee, Zeyuan Zhang, Ken C Dong, Andreas Martin

Abstract read
In one paragraph

Article in Nature structural & molecular biology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed
–field-weighted citation impact
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

12 citing papers in PubMed.

  1. Disulphide maintenance systems and proteostasis.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2026
    Review
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  12. Substrate-dependent activation of LONP1 informs on proteolytic regulation and ATPase motor function.Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

5 authors.

Connor ArkinsonCalifornia Institute for Quantitative Biosciences, University of California at Berkeley, Berkeley, CA, USA.ORCID http://orcid.org/0000-0003-3665-2484
Christine L GeeCalifornia Institute for Quantitative Biosciences, University of California at Berkeley, Berkeley, CA, USA.ORCID http://orcid.org/0000-0002-2632-6418
Zeyuan ZhangBiophysics Graduate Program, University of California at Berkeley, Berkeley, CA, USA.ORCID http://orcid.org/0009-0001-2619-6502
Ken C DongHoward Hughes Medical Institute, University of California at Berkeley, Berkeley, CA, USA.
Andreas MartinCalifornia Institute for Quantitative Biosciences, University of California at Berkeley, Berkeley, CA, USA. a.martin@berkeley.edu.ORCID http://orcid.org/0000-0003-0923-3284

Funding

ATP-Dependent Protein Unfolding and Translocation by the Eukaryotic ProteasomeR01GM094497 · NIGMS · UNIVERSITY OF CALIFORNIA BERKELEY · PI MARTIN, ANDREAS · 2011 to 2024
$3.7M
NIGMS NIH HHS R01 GM094497
6 · The paper itself

Abstract

The 26S proteasome targets many cellular proteins for degradation during homeostasis and quality control. Proteasome-interacting cofactors modulate these functions and aid in substrate degradation. Here we solve high-resolution structures of the redox active cofactor TXNL1 bound to the human 26S proteasome at saturating and substoichiometric concentrations by time-resolved cryo-electron microscopy (cryo-EM). We identify distinct binding modes of TXNL1 that depend on the proteasome conformation and ATPase motor states. Together with biophysical and biochemical experiments, we show that the resting-state proteasome binds TXNL1 with low affinity and in variable positions on top of the Rpn11 deubiquitinase. In contrast, in the actively degrading proteasome, TXNL1 uses additional interactions for high-affinity binding, whereby its C-terminal tail covers the catalytic groove of Rpn11 and coordinates the active-site Zn

Indexed as

Proteasome Endopeptidase ComplexAdenosine TriphosphatasesCryoelectron MicroscopyHumansModels, MolecularProtein BindingProtein ConformationProteolysisAdenosine TriphosphatasesATP dependent 26S proteaseProteasome Endopeptidase Complex

Identifiers

PMID41198955
PMCPMC12700817

What OpenQuestion holds

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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.