Evidence map›Paper›PMID 15339798›Full record

ArticleBiophysical journal2004

Molecular dynamics study of gating in the mechanosensitive channel of small conductance MscS.

Marcos Sotomayor, Klaus Schulten

Open access · bronzeAbstract readComparative StudyEvaluation Study
In one paragraph

Article in Biophysical journal, 2004. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 82 papers.

0numbers the graph read from it
0cells of the map it votes in
82citing papers in PubMed
6.0field-weighted citation impact, top 3% 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

82 citing papers in PubMed, 167 citations in OpenAlex.

  1. Article
  2. The MscS channel frombioRxiv : the preprint server for biology · 2026
    Article
  3. Article
  4. Molecular dynamics study of ClCellular and molecular life sciences : CMLS · 2023
    Article
  5. Article
  6. Mechanobiology of the cell nucleus.APL bioengineering · 2022
    Article
  7. Review
  8. Review
  9. Article
  10. Article
  11. Article
  12. Review
  13. When Stiffness Matters: Mechanosensing in Heart Development and Disease.Frontiers in cell and developmental biology · 2020
    Review
  14. Article
  15. Review
  16. Article
  17. Article
  18. Ion Channel Sensing: Are Fluctuations the Crux of the Matter?The journal of physical chemistry letters · 2018
    Article
  19. Article
  20. Article

22 more citing papers are in PubMed but not listed here.

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

2 authors at 1 institution in 1 country.

Marcos SotomayorDepartment of Physics, University of Illinois at Urbana-Champaign, and Beckman Institute for Advanced Science and Technology, Urbana, Illinois.
Klaus Schulten
University of Illinois Urbana-Champaign · US

Funding

WHOLE CELL SIMULATIONP41RR005969 · NCRR · UNIVERSITY OF ILLINOIS URBANA-CHAMPAIGN · PI STONE, JOHN H · 1990 to 2011
$19.8M
System-Level Simulation of a Bioenergetic MembraneR01GM067887 · NIGMS · UNIVERSITY OF ILLINOIS URBANA-CHAMPAIGN · PI TAJKHORSHID, EMAD · 2003 to 2018
$4.0M
NCRR NIH HHS P41 RR005969NIGMS NIH HHS R01 GM067887
6 · The paper itself

Abstract

Mechanosensitive channels are a class of ubiquitous membrane proteins gated by mechanical strain in the cellular membrane. MscS, the mechanosensitive channel of small conductance, is found in the inner membrane of Escherichia coli and its crystallographic structure in an open form has been recently solved. By means of molecular dynamics simulations we studied the stability of the channel conformation suggested by crystallography in a fully solvated lipid (POPC) bilayer, the combined system encompassing 224,340 atoms. When restraining the backbone of the protein, the channel remained in the open form and the simulation revealed intermittent permeation of water molecules through the channel. Abolishing the restraints under constant pressure conditions led to spontaneous closure of the transmembrane channel, whereas abolishing the restraints when surface tension (20 dyn/cm) was applied led to channel widening. The large balloon-shaped cytoplasmic domain of MscS exhibited spontaneous diffusion of ions through its side openings. Interaction between the transmembrane domain and the cytoplasmic domain of MscS was observed and involved formation of salt bridges between residues Asp62 and Arg128; this interaction may be essential for the gating of MscS. K+ and Cl- ions showed distinctively different distributions in and around the channel.

Indexed as

Ion Channel GatingMechanotransduction, CellularMembrane FluidityModels, ChemicalModels, MolecularComputer SimulationElectric ConductivityEscherichia coli ProteinsIon ChannelsKineticsLipid BilayersMotionPhosphatidylcholinesPhysical StimulationPorosityProtein Conformation1-palmitoyl-2-oleoylphosphatidylcholineEscherichia coli ProteinsIon ChannelsLipid BilayersMscS protein, E coliPhosphatidylcholinesWater

Identifiers

PMID15339798
PMCPMC1304777
OpenAlexW1997766063

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.