Evidence map›Paper›PMID 22429139›Full record

ArticleThe journal of physical chemistry. B2012

Conformational sampling of peptides in the presence of protein crowders from AA/CG-multiscale simulations.

Alexander V Predeus, Seref Gul, Srinivasa M Gopal, Michael Feig

Abstract read
In one paragraph

Article in The journal of physical chemistry. B, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 33 papers.

0numbers the graph read from it
0cells of the map it votes in
33citing papers in PubMed
2.6field-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

33 citing papers in PubMed, 60 citations in OpenAlex.

  1. Article
  2. Article
  3. Review
  4. Review
  5. Article
  6. One bead per residue can describe all-atom protein structures.Structure (London, England : 1993) · 2024
    Article
  7. Article
  8. Article
  9. Review
  10. Article
  11. Review
  12. Modeling Crowded Environment in Molecular Simulations.Frontiers in molecular biosciences · 2019
    Review
  13. Article
  14. Article
  15. Article
  16. Article
  17. Predicting Molecular Crowding Effects in Ion-RNA Interactions.The journal of physical chemistry. B · 2016
    Article
  18. Article
  19. Article
  20. Stability of Protein-Specific Hydration Shell on Crowding.Journal of the American Chemical Society · 2016
    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 1 institution in 1 country.

Alexander V PredeusDepartment of Biochemistry & Molecular Biology, Michigan State University, East Lansing, Michigan 48824, United States.
Seref Gul
Srinivasa M Gopal
Michael Feig
Michigan State University · US

Funding

Protein structure refinement through effective sampling and scoringR01GM084953 · NIGMS · MICHIGAN STATE UNIVERSITY · PI FEIG, MICHAEL · 2008 to 2017
$2.5M
Multiscale modeling of supramolecular protein-DNA assembliesR01GM092949 · NIGMS · MICHIGAN STATE UNIVERSITY · PI FEIG, MICHAEL · 2010 to 2013
$1.1M
NIGMS NIH HHS GM084953NIGMS NIH HHS GM092949NIGMS NIH HHS R01 GM084953NIGMS NIH HHS R01 GM092949
6 · The paper itself

Abstract

Macromolecular crowding is recognized as an important factor influencing folding and conformational dynamics of proteins and nucleic acids. Previous views of crowding have focused on the mostly entropic volume exclusion effect of crowding, but recent studies are indicating the importance of enthalpic effects, in particular, changes in electrostatic interactions due to crowding. Here, temperature replica exchange molecular dynamics simulations of trp-cage and melittin in the presence of explicit protein crowders are presented to further examine the effect of protein crowders on peptide dynamics. The simulations involve a three-component multiscale modeling scheme where the peptides are represented at an atomistic level, the crowder proteins at a coarse-grained level, and the surrounding aqueous solvent as implicit solvent. This scheme optimally balances a physically realistic description for the peptide with computational efficiency. The multiscale simulations were compared with simulations of the same peptides in different dielectric environments with dielectric constants ranging from 5 to 80. It is found that the sampling in the presence of the crowders resembles sampling with reduced dielectric constants between 10 and 40. Furthermore, diverse conformational ensembles are generated in the presence of crowders including partially unfolded states for trp-cage. These findings emphasize the importance of enthalpic interactions over volume exclusion effects in describing the effects of cellular crowding.

Indexed as

Molecular Dynamics SimulationProtein FoldingAnimalsAntigens, BacterialBacterial ProteinsBeesPeptidesProtein ConformationProteinsStreptococcusTemperatureThermodynamicsAntigens, BacterialBacterial ProteinsIgG Fc-binding protein, StreptococcusM antigen, Brucella melitensisPeptidesProteins

Identifiers

PMID22429139
PMCPMC3398202
OpenAlexW2082419092

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.