ArticleBiophysical journal2012
Long-timescale molecular dynamics simulations elucidate the dynamics and kinetics of exposure of the hydrophobic patch in troponin C.
Article in Biophysical journal, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 33 papers.
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Who cites it
33 citing papers in PubMed.
- Enhanced Sampling of Protein Conformations in AlphaFold3 with Repulsive Bias in the Diffusion Generative Model.JACS Au · 2026Article
- Calcium dissociation with carbonate ions from Pf-SCP, sarcoplasmic calcium-binding protein in Pinctada fucata, contributes to calcium mineralization for shell formation.Protein science : a publication of the Protein Society · 2025Article
- Modulation of Structure and Dynamics of Cardiac Troponin by Phosphorylation and Mutations Revealed by Molecular Dynamics Simulations.The journal of physical chemistry. B · 2023Article
- Targeting Troponin C with Small Molecules Containing Diphenyl Moieties: Calcium Sensitivity Effects on Striated Muscles and Structure-Activity Relationship.Journal of chemical information and modeling · 2023Article
- Targeting Troponin C with Small Molecules Containing Diphenyl Moieties: Calcium Sensitivity Effects on Striated Muscle and Structure Activity Relationship.bioRxiv : the preprint server for biology · 2023Article
- Myofilament-associated proteins with intrinsic disorder (MAPIDs) and their resolution by computational modeling.Quarterly reviews of biophysics · 2023Review
- Computational Exploration and Characterization of Potential Calcium Sensitizing Mutations in Cardiac Troponin C.Journal of chemical information and modeling · 2022Article
- Umbrella Sampling Simulations Measure Switch Peptide Binding and Hydrophobic Patch Opening Free Energies in Cardiac Troponin.Journal of chemical information and modeling · 2022Article
- Free-Energy Surfaces of Two Cardiac Thin Filament Conformational Changes during Muscle Contraction.The journal of physical chemistry. B · 2022Article
- Computational Methods Elucidate Consequences of Mutations and Post-translational Modifications on Troponin I Effective Concentration to Troponin C.The journal of physical chemistry. B · 2021Article
- Molecular dynamics provides new insights into the mechanism of calcium signal transduction and interdomain interactions in cardiac troponin.FEBS open bio · 2021Article
- Adaptative Steered Molecular Dynamics Study of Mutagenesis Effects on Calcium Affinity in the Regulatory Domain of Cardiac Troponin C.Journal of chemical information and modeling · 2021Article
- Structural Changes beyond the EF-Hand Contribute to Apparent Calcium Binding Affinities: Insights from Parvalbumins.The journal of physical chemistry. B · 2021Article
- Anomalous structural dynamics of minimally frustrated residues in cardiac troponin C triggers hypertrophic cardiomyopathy.Chemical science · 2021Article
- Discovery of Novel Small-Molecule Calcium Sensitizers for Cardiac Troponin C: A Combined Virtual and Experimental Screening Approach.Journal of chemical information and modeling · 2020Article
- Mechanism of Cardiac Troponin C Calcium Sensitivity Modulation by Small Molecules Illuminated by Umbrella Sampling Simulations.Journal of chemical information and modeling · 2019Article
- Computational Studies of Cardiac and Skeletal Troponin.Frontiers in molecular biosciences · 2019Review
- Molecular Dynamics and Umbrella Sampling Simulations Elucidate Differences in Troponin C Isoform and Mutant Hydrophobic Patch Exposure.The journal of physical chemistry. B · 2018Article
- Successful Identification of Cardiac Troponin Calcium Sensitizers Using a Combination of Virtual Screening and ROC Analysis of Known Troponin C Binders.Journal of chemical information and modeling · 2017Article
- Changes in the dynamics of the cardiac troponin C molecule explain the effects of CaThe Journal of biological chemistry · 2017Article
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3 authors.
Funding
Abstract
Troponin (Tn) is an important regulatory protein in the thin-filament complex of cardiomyocytes. Calcium binding to the troponin C (TnC) subunit causes a change in its dynamics that leads to the transient opening of a hydrophobic patch on TnC's surface, to which a helix of another subunit, troponin I (TnI), binds. This process initiates contraction, making it an important target for studies investigating the detailed molecular processes that underlie contraction. Here we use microsecond-timescale Anton molecular dynamics simulations to investigate the dynamics and kinetics of the opening transition of the TnC hydrophobic patch. Free-energy differences for opening are calculated for wild-type Ca(2+)-bound TnC (∼8 kcal/mol), V44Q Ca(2+)-bound TnC (3.2 kcal/mol), E40A Ca(2+)-bound TnC (∼12 kcal/mol), and wild-type apo TnC (∼20 kcal/mol). These results suggest that the mutations have a profound impact on the frequency with which the hydrophobic patch presents to TnI. In addition, these simulations corroborate that cardiac wild-type TnC does not open on timescales relevant to contraction without calcium being bound.
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