ArticleChannels (Austin, Tex.)2017
Nanomechanical properties of MscL α helices: A steered molecular dynamics study.
Article in Channels (Austin, Tex.), 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.
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Who cites it
13 citing papers in PubMed.
- Opening threshold and kinetics of the MscL mechanosensitive channel are regulated by its periplasmic loop.Research square · 2026Article
- Differentiation of RNA-protein docking structures through molecular dynamics simulation and machine learning methods.Briefings in bioinformatics · 2026Article
- Opening threshold and kinetics of the MscL mechanosensitive channel are regulated by its periplasmic loop.npj biological physics and mechanics · 2026Article
- Probing the mechanical properties of ORF3a protein, a transmembrane channel of SARS-CoV-2 virus: Molecular dynamics study.Chemical physics · 2023Article
- Pocket delipidation induced by membrane tension or modification leads to a structurally analogous mechanosensitive channel state.Structure (London, England : 1993) · 2022Article
- Article
- Conformational Flexibility of the Protein-Protein Interfaces of the Ebola Virus VP40 Structural Matrix Filament.The journal of physical chemistry. B · 2019Article
- Nanomechanical DNA resonators for sensing and structural analysis of DNA-ligand complexes.Nature communications · 2019Article
- Remembering Mechanosensitivity of NMDA Receptors.Frontiers in cellular neuroscience · 2019Review
- Constitutive boost of a KProceedings of the National Academy of Sciences of the United States of America · 2018Article
- Structural Dynamics of the MscL C-terminal Domain.Scientific reports · 2017Article
- Channel disassembled: Pick, tweak, and soak parts to soften.Channels (Austin, Tex.) · 2017Article
- Pulling MscL open via N-terminal and TM1 helices: A computational study towards engineering an MscL nanovalve.PloS one · 2017Article
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7 authors.
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No grant is acknowledged in the PubMed record.
Abstract
Gating of mechanosensitive (MS) channels is driven by a hierarchical cascade of movements and deformations of transmembrane helices in response to bilayer tension. Determining the intrinsic mechanical properties of the individual transmembrane helices is therefore central to understanding the intricacies of the gating mechanism of MS channels. We used a constant-force steered molecular dynamics (SMD) approach to perform unidirectional pulling tests on all the helices of MscL in M. tuberculosis and E. coli homologs. Using this method, we could overcome the issues encountered with the commonly used constant-velocity SMD simulations, such as low mechanical stability of the helix during stretching and high dependency of the elastic properties on the pulling rate. We estimated Young's moduli of the α-helices of MscL to vary between 0.2 and 12.5 GPa with TM2 helix being the stiffest. We also studied the effect of water on the properties of the pore-lining TM1 helix. In the absence of water, this helix exhibited a much stiffer response. By monitoring the number of hydrogen bonds, it appears that water acts like a 'lubricant' (softener) during TM1 helix elongation. These data shed light on another physical aspect underlying hydrophobic gating of MS channels, in particular MscL.
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