Evidence map›Paper›PMID 25915729›Full record

ArticleJournal of the American Chemical Society2015

X-ray Crystallographic Structures of Oligomers of Peptides Derived from β2-Microglobulin.

Ryan K Spencer, Adam G Kreutzer, Patrick J Salveson, Hao Li, James S Nowick

Abstract read
In one paragraph

Article in Journal of the American Chemical Society, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed
4.0field-weighted citation impact, top 6% 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

20 citing papers in PubMed, 33 citations in OpenAlex.

  1. Article
  2. An Improved Turn Structure for Inducing β-Hairpin Formation in Peptides.Angewandte Chemie (International ed. in English) · 2021
    Article
  3. Exploring amyloid oligomers with peptide model systems.Current opinion in chemical biology · 2021
    Review
  4. Review
  5. Article
  6. Article
  7. Review
  8. Article
  9. Article
  10. Review
  11. Review
  12. Article
  13. A Tetramer Derived from Islet Amyloid Polypeptide.The Journal of organic chemistry · 2017
    Article
  14. Small molecule probes of protein aggregation.Current opinion in chemical biology · 2017
    Review
  15. Article
  16. Stabilization, Assembly, and Toxicity of Trimers Derived from Aβ.Journal of the American Chemical Society · 2017
    Article
  17. Article
  18. Review
  19. Article
  20. 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

5 authors at 1 institution in 1 country.

Ryan K SpencerDepartment of Chemistry, University of California, Irvine, Irvine, California 92697, United States.
Adam G KreutzerDepartment of Chemistry, University of California, Irvine, Irvine, California 92697, United States.
Patrick J SalvesonDepartment of Chemistry, University of California, Irvine, Irvine, California 92697, United States.
Hao LiDepartment of Chemistry, University of California, Irvine, Irvine, California 92697, United States.
James S NowickDepartment of Chemistry, University of California, Irvine, Irvine, California 92697, United States.
University of California, Irvine · US

Funding

Purchase of an Microwave Peptide SynthesizerR01GM097562 · NIGMS · UNIVERSITY OF CALIFORNIA-IRVINE · PI NOWICK, JAMES S · 2012 to 2019
$2.5M
Howard Hughes Medical InstituteNIGMS NIH HHS 5R01GM097562NIGMS NIH HHS R01 GM097562
6 · The paper itself

Abstract

Amyloid diseases such as Alzheimer's disease, Parkinson's disease, and type II diabetes share common features of toxic soluble protein oligomers. There are no structures at atomic resolution of oligomers formed by full-length amyloidogenic peptides and proteins, and only a few structures of oligomers formed by peptide fragments. The paucity of structural information provides a fundamental roadblock to understanding the pathology of amyloid diseases and developing preventions or therapies. Here, we present the X-ray crystallographic structures of three families of oligomers formed by macrocyclic peptides containing a heptapeptide sequence derived from the amyloidogenic E chain of β2-microglobulin (β2m). Each macrocyclic peptide contains the heptapeptide sequence β2m63-69 and a second heptapeptide sequence containing an N-methyl amino acid. These peptides form β-sheets that further associate into hexamers, octamers, and dodecamers: the hexamers are trimers of dimers; the octamers are tetramers of dimers; and the dodecamers contain two trimer subunits surrounded by three pairs of β-sheets. These structures illustrate a common theme in which dimer and trimer subunits further associate to form a hydrophobic core. The seven X-ray crystallographic structures not only illustrate a range of oligomers that a single amyloidogenic peptide sequence can form, but also how mutation can alter the size and topology of the oligomers. A cocrystallization experiment in which a dodecamer-forming peptide recruits a hexamer-forming peptide to form mixed dodecamers demonstrates that one species can dictate the oligomerization of another. These findings should also be relevant to the formation of oligomers of full-length peptides and proteins in amyloid diseases.

Indexed as

Amyloidbeta 2-MicroglobulinCell LineCrystallography, X-RayHumansModels, MolecularPeptide FragmentsProtein ConformationProtein MultimerizationAmyloidbeta 2-MicroglobulinPeptide Fragments

Identifiers

PMID25915729
PMCPMC4523215
OpenAlexW2138986606

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Registered trials

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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.