ArticleBiophysical journal2016
Energetics of Ion Permeation in an Open-Activated TRPV1 Channel.
Article in Biophysical journal, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.
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Who cites it
12 citing papers in PubMed.
- Cryo-EM Brings the Mechanisms of Activation, Inactivation, and Inhibition of Ryanodine Receptors into Focus.Advances in experimental medicine and biology · 2026Review
- Perspectives on TRPV Channels in the Structural and Computational Revolution Era.Advances in experimental medicine and biology · 2026Review
- In silico analysis of sodium ion permeation mechanisms in transient receptor potential vanilloid 1.Scientific reports · 2025Article
- Permeant cations modulate pore dynamics and gating of TRPV1 ion channels.The Journal of general physiology · 2024Article
- Ion-dependent structure, dynamics, and allosteric coupling in a non-selective cation channel.Nature communications · 2021Article
- Electrophysiological Properties from Computations at a Single Voltage: Testing Theory with Stochastic Simulations.Entropy (Basel, Switzerland) · 2021Article
- Structural mechanisms of transient receptor potential ion channels.The Journal of general physiology · 2020Review
- Heat activation mechanism of TRPV1: New insights from molecular dynamics simulation.Temperature (Austin, Tex.) · 2019Review
- The conformational wave in capsaicin activation of transient receptor potential vanilloid 1 ion channel.Nature communications · 2018Article
- Ion Permeation Mechanism in Epithelial Calcium Channel TRVP6.Scientific reports · 2018Article
- Ion Channel Sensing: Are Fluctuations the Crux of the Matter?The journal of physical chemistry letters · 2018Article
- Mapping Ryanodine Binding Sites in the Pore Cavity of Ryanodine Receptors.Biophysical journal · 2017Article
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Authors and funding
3 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Ion channels enable diffusion of ions down physiological electrochemical gradients. Modulation of ion permeation is crucial for the physiological functioning of cells, and misregulation of ion channels is linked to a myriad of channelopathies. The ion permeation mechanism in the transient receptor potential (TRP) ion channel family is currently not understood at an atomistic level. In this work, we employed a simulation strategy for ion permeation (molecular-dynamics simulations with bias-exchange metadynamics) to study and compare monovalent (Na(+), K(+)) ion permeation in the open-activated TRP vanniloid-1 (TRPV1) ion channel. Using ∼3.6 μs of simulation trajectories, we obtained atomistic evidence for the nonselective nature of TRPV1. Our analysis shows that solvated monovalent ions permeate through the selectivity filter with comparable energetic barriers via a two-site mechanism. Finally, we confirmed that an intracellular binding site is located between the intracellular gate residues I679 and E684.
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