Evidence map›Paper›PMID 21635954›Full record

ArticleJournal of structural biology2011

Structure and stability of the lamin A tail domain and HGPS mutant.

Zhao Qin, Agnieszka Kalinowski, Kris Noel Dahl, Markus J Buehler

Abstract read
In one paragraph

Article in Journal of structural biology, 2011. 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
2.7field-weighted citation impact, top 10% 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, 52 citations in OpenAlex.

  1. Article
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  4. Review
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  14. Article
  15. Nuclear stiffening inhibits migration of invasive melanoma cells.Cellular and molecular bioengineering · 2014
    Article
  16. Review
  17. The cellular mastermind(?)-mechanotransduction and the nucleus.Progress in molecular biology and translational science · 2014
    Review
  18. From lamins to lamina: a structural perspective.Histochemistry and cell biology · 2013
    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

4 authors at 2 institutions in 1 country.

Zhao QinLaboratory for Atomistic and Molecular Mechanics, Department of Civil and Environmental Engineering, Massachusetts Institute of Technology, 77 Mass. Ave., Room 1-235A&B, Cambridge, MA 02139, USA.
Agnieszka Kalinowski
Kris Noel Dahl
Markus J Buehler
Carnegie Mellon University · USMassachusetts Institute of Technology · US

Funding

Molecular determinants of lamin a accumulation in human aging and diseaseF30AG030905 · NIA · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI KALINOWSKI, AGNIESZKA · 2009 to 2012
$185k
NIA NIH HHS F30 AG030905NIA NIH HHS F30AG030905
6 · The paper itself

Abstract

Hutchinson-Gilford progeria syndrome (HGPS) is a premature aging syndrome caused by the expression and accumulation of a mutant form of lamin A, Δ50 lamin A. As a component of the cell's nucleoskeleton, lamin A plays an important role in the mechanical stabilization of the nuclear envelope and in other nuclear functions. It is largely unknown how the characteristic 50 amino acid deletion affects the conformation of the mostly intrinsically disordered tail domain of lamin A. Here we perform replica exchange molecular dynamics simulations of the tail domain and determine an ensemble of semi-stable structures. Based on these structures we show that the ZMPSTE 24 cleavage site on the precursor form of the lamin A tail domain orients itself in such a way as to facilitate cleavage during the maturation process. We confirm our simulated structures by comparing the thermodynamic properties of the ensemble structures to in vitro stability measurements. Using this combination of experimental and computational techniques, we compare the size, heterogeneity of size, thermodynamic stability of the Ig-fold, as well as the mechanisms of force-induced denaturation. Our data shows that the Δ50 lamin A tail domain is more compact and displays less heterogeneity than the mature lamin A tail domain. Altogether these results suggest that the altered structure and stability of the tail domain can explain changed protein-protein and protein-DNA interactions and may represent an etiology of the disease. Also, this study provides the first molecular structure(s) of the lamin A tail domain, which is confirmed by thermodynamic tests in experiment.

Indexed as

Amino Acid SequenceAnimalsFluorometryLamin Type AMiceMolecular Dynamics SimulationMolecular Sequence DataMutationProgeriaProtein StabilityProtein Structure, SecondaryLamin Type A

Identifiers

PMID21635954
PMCPMC3150306
OpenAlexW2063990636

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.