Evidence map›Paper›PMID 39082221›Full record

ArticleACS chemical neuroscience2024

O-GlcNAc Modification of α-Synuclein Can Alter Monomer Dynamics to Control Aggregation Kinetics.

Kasun Gamage, Binyou Wang, Eldon R Hard, Thong Van, Ana Galesic, George R Phillips, Matthew Pratt, Lisa J Lapidus

Erratum issuedAbstract read
In one paragraph

Article in ACS chemical neuroscience, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 6 papers.

0numbers the graph read from it
0cells of the map it votes in
6citing 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

6 citing papers in PubMed.

  1. Article
  2. Review
  3. Review
  4. Review
  5. Native Chemical Ligation to Install Chemical Protein Modifications.Methods in molecular biology (Clifton, N.J.) · 2026
    Article
  6. Review
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

8 authors.

Kasun GamageDepartment of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, United States.
Binyou WangDepartment of Chemistry, University of Southern California, Los Angeles, California 90089, United States.
Eldon R HardDepartment of Chemistry, University of Southern California, Los Angeles, California 90089, United States.
Thong VanDepartment of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, United States.
Ana GalesicDepartment of Chemistry, University of Southern California, Los Angeles, California 90089, United States.
George R PhillipsDepartment of Chemistry, University of Southern California, Los Angeles, California 90089, United States.
Matthew PrattDepartment of Chemistry, University of Southern California, Los Angeles, California 90089, United States.ORCID 0000-0003-3205-5615
Lisa J LapidusDepartment of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, United States.ORCID 0000-0003-3136-2680

Funding

Functional Analysis of O-GlcNAc using Synthetic Protein ChemistryR01GM114537 · NIGMS · UNIVERSITY OF SOUTHERN CALIFORNIA · PI PRATT, MATTHEW ROBERT · 2015 to 2024
$3.1M
NIGMS NIH HHS R01 GM114537
6 · The paper itself

Abstract

The intrinsically disordered protein α-Synuclein is identified as a major toxic aggregate in Parkinson's as well as several other neurodegenerative diseases. Recent work on this protein has focused on the effects of posttranslational modifications on aggregation kinetics. Among them, O-GlcNAcylation of α-Synuclein has been observed to inhibit the aggregation propensity of the protein. Here, we investigate the monomer dynamics of two O-GlcNAcylated α-Synucleins, α-Syn(gT72), and α-Syn(gS87) and correlate them with the aggregation kinetics. We find that, compared to the unmodified protein, glycosylation at T72 makes the protein less compact and more diffusive, while glycosylation at S87 makes the protein more compact and less diffusive. Based on a model of the earliest steps in aggregation, we predict that T72 should aggregate slower than unmodified protein, which is confirmed by ThT fluorescence measurements. In contrast, S87 should aggregate faster, which is not mirrored in ThT kinetics of later fibril formation but does not rule out a higher rate of formation of small oligomers. Together, these results show that posttranslational modifications do not uniformly affect aggregation propensity.

Indexed as

alpha-SynucleinProtein Processing, Post-TranslationalAcetylglucosamineGlycosylationHumansKineticsProtein AggregatesProtein Aggregation, PathologicalAcetylglucosaminealpha-SynucleinProtein Aggregatesaggregationglycosylationintramolecular diffusionParkinson’s diseaseposttranslational modificationα-Synuclein

Identifiers

PMID39082221
PMCPMC11342298

What Socratic 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 Socratic graph.