Evidence map›Paper›PMID 34081921›Full record

ArticleCell chemical biology2021

Native mass spectrometry and gas-phase fragmentation provide rapid and in-depth topological characterization of a PROTAC ternary complex.

Jong Hee Song, Nicole D Wagner, Jing Yan, Jing Li, Richard Y-C Huang, Aaron J Balog, John A Newitt, Guodong Chen, Michael L Gross

Open access · greenAbstract read
In one paragraph

Article in Cell chemical biology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed
1.2field-weighted citation impact, top 21% 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

15 citing papers in PubMed, 30 citations in OpenAlex.

  1. Article
  2. Review
  3. Article
  4. Article
  5. Caspase-1 in cancer and inflammatory diseases: a potential therapeutic target.Apoptosis : an international journal on programmed cell death · 2026
    Review
  6. Article
  7. Article
  8. Hydrogen-Deuterium Exchange Mass Spectrometry for Molecular Glue Characterization.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2025
    Article
  9. Article
  10. Review
  11. Article
  12. Review
  13. Review
  14. Recent technological developments for native mass spectrometry.Biochimica et biophysica acta. Proteins and proteomics · 2022
    Review
  15. Article
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

9 authors at 2 institutions in 1 country.

Jong Hee SongDepartment of Chemistry, Washington University in St. Louis, St. Louis, MO 63130, USA.
Nicole D WagnerDepartment of Chemistry, Washington University in St. Louis, St. Louis, MO 63130, USA.
Jing YanDepartment of Chemistry, Washington University in St. Louis, St. Louis, MO 63130, USA.
Jing LiBristol Myers Squibb Company, Research and Early Development, Princeton, NJ 08543, USA.
Richard Y-C HuangBristol Myers Squibb Company, Research and Early Development, Princeton, NJ 08543, USA.
Aaron J BalogBristol Myers Squibb Company, Research and Early Development, Princeton, NJ 08543, USA.
John A NewittBristol Myers Squibb Company, Research and Early Development, Princeton, NJ 08543, USA.
Guodong ChenBristol Myers Squibb Company, Research and Early Development, Princeton, NJ 08543, USA.
Michael L GrossDepartment of Chemistry, Washington University in St. Louis, St. Louis, MO 63130, USA. Electronic address: mgross@wustl.edu.
Bristol-Myers Squibb (United States) · USWashington University in St. Louis · US

Funding

TrainingP41GM103422 · NIGMS · WASHINGTON UNIVERSITY · PI YARASHESKI, KEVIN E · 2012 to 2019
$12.0M
A Biomedical Mass Spectrometry Resource: Ongoing Driving Biomedical ProjectsR24GM136766 · NIGMS · WASHINGTON UNIVERSITY · PI GROSS, MICHAEL L · 2020 to 2022
$2.3M
NIGMS NIH HHS P41 GM103422NIGMS NIH HHS R24 GM136766
6 · The paper itself

Abstract

Proteolysis-targeting chimeras (PROTACs) represent a new direction in small-molecule therapeutics whereby a heterobifunctional linker to a protein of interest (POI) induces its ubiquitination-based proteolysis by recruiting an E3 ligase. Here, we show that charge reduction, native mass spectrometry, and gas-phase activation methods combine for an in-depth analysis of a PROTAC-linked ternary complex. Electron capture dissociation (ECD) of the intact POI-PROTAC-VCB complex (a trimeric subunit of an E3 ubiquitin ligase) promotes POI dissociation. Collision-induced dissociation (CID) causes elimination of the nonperipheral PROTAC, producing an intact VCB-POI complex not seen in solution but consistent with PROTAC-induced protein-protein interactions. In addition, we used ion mobility spectrometry (IMS) and collisional activation to identify the source of this unexpected dissociation. Together, the evidence shows that this integrated approach can be used to screen for ternary complex formation and PROTAC-protein contacts and may report on PROTAC-induced protein-protein interactions, a characteristic correlated with PROTAC selectivity and efficacy.

Indexed as

Bromodomain Containing ProteinsCell Cycle ProteinsGasesIon Mobility SpectrometryProtein Interaction MapsProteolysisTranscription FactorsUbiquitin-Protein LigasesBRD4 protein, humanBromodomain Containing ProteinsCell Cycle ProteinsGasesTranscription FactorsUbiquitin-Protein Ligasescharge-reducing agentCID (collision-induced dissociation)CIU (collision-induced unfolding)E3 ligaseECD (electron capture dissociation)IMS (ion mobility spectrometry)MZ1native mass spectrometryPROTACs (proteolysis-targeting chimeras)ternary complex

Identifiers

PMID34081921
PMCPMC8592818
OpenAlexW3164238962

What OpenQuestion holds

Textmetadata
LicenceTDM
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.