Evidence map›Paper›PMID 27099354›Full record

ArticleProtein engineering, design & selection : PEDS2016

Transthyretin variants with improved inhibition of β-amyloid aggregation.

Parth Mangrolia, Dennis T Yang, Regina M Murphy

Open access · bronzeAbstract read
In one paragraph

Article in Protein engineering, design & selection : PEDS, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed
2.4field-weighted citation impact, top 11% 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

17 citing papers in PubMed, 28 citations in OpenAlex.

  1. Review
  2. Article
  3. Article
  4. Article
  5. Review
  6. Article
  7. The interaction of zinc with the multi-functional plasma thyroid hormone distributor protein, transthyretin: evolutionary and cross-species comparative aspects.Biometals : an international journal on the role of metal ions in biology, biochemistry, and medicine · 2021
    Review
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Inhibition of amyloid beta fibril formation by monomeric human transthyretin.Protein science : a publication of the Protein Society · 2018
    Article
  15. Inhibition of curli assembly andProceedings of the National Academy of Sciences of the United States of America · 2017
    Article
  16. Article
  17. Review
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

3 authors at 1 institution in 1 country.

Parth MangroliaDepartment of Chemical and Biological Engineering, University of Wisconsin-Madison, 1415 Engineering Dr., Madison, WI 53706, USA.
Dennis T YangDepartment of Chemical and Biological Engineering, University of Wisconsin-Madison, 1415 Engineering Dr., Madison, WI 53706, USA.
Regina M MurphyDepartment of Chemical and Biological Engineering, University of Wisconsin-Madison, 1415 Engineering Dr., Madison, WI 53706, USA.
University of Wisconsin–Madison · US

Funding

Tranthyretin's Regulatory Role in Beta-Amyloid Aggregation and ToxicityR01AG033493 · NIA · UNIVERSITY OF WISCONSIN-MADISON · PI JOHNSON, JEFFREY A, MURPHY, REGINA M. · 2009 to 2016
$2.7M
NIA NIH HHS R01 AG033493
6 · The paper itself

Abstract

Aggregation of β-amyloid (Aβ) is widely believed to cause neuronal dysfunction in Alzheimer's disease. Transthyretin (TTR) binds to Aβ and inhibits its aggregation and neurotoxicity. TTR is a homotetrameric protein, with each monomer containing a short α-helix and two anti-parallel β-sheets. Dimers pack into tetramers to form a hydrophobic cavity. Here we report the discovery of a TTR mutant, N98A, that was more effective at inhibiting Aβ aggregation than wild-type (WT) TTR, although N98A and WT bound Aβ equally. The N98A mutation is located on a flexible loop distant from the putative Aβ-binding sites and does not alter secondary and tertiary structures nor prevent correct assembly into tetramers. Under non-physiological conditions, N98A tetramers were kinetically and thermodynamically less stable than WT, suggesting a difference in the tetramer folded structure. In vivo, the lone cysteine in TTR is frequently modified by S-cysteinylation or S-sulfonation. Like the N98A mutation, S-cysteinylation of TTR modestly decreased tetramer stability and increased TTR's effectiveness at inhibiting Aβ aggregation. Collectively, these data indicate that a subtle change in TTR tetramer structure measurably increases TTR's ability to inhibit Aβ aggregation.

Indexed as

Point MutationAlzheimer DiseaseAmyloid beta-PeptidesBinding SitesHumansModels, MolecularPrealbuminProtein Aggregation, PathologicalProtein BindingProtein ConformationProtein MultimerizationAmyloid beta-PeptidesPrealbuminamyloidprotein aggregationtransthyretin

Identifiers

PMID27099354
PMCPMC4867095
OpenAlexW2339632545

What OpenQuestion holds

Textmetadata
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.