2017
Actin Filament Strain Promotes Severing and Cofilin Dissociation
Schramm AC, Hocky GM, Voth GA, Blanchoin L, Martiel JL, De La Cruz EM. Actin Filament Strain Promotes Severing and Cofilin Dissociation. Biophysical Journal 2017, 112: 2624-2633. PMID: 28636918, PMCID: PMC5479148, DOI: 10.1016/j.bpj.2017.05.016.Peer-Reviewed Original ResearchConceptsContinuum mechanics modelStrain energy distributionMechanical propertiesMechanics modelFilament twistingEnhanced spatial resolutionFilament mechanical propertiesElastic energyTorsional rigidityShape deformationSpatial resolutionContinuum modelTorsional flexibilityFilament bendingCofilactin filamentsDynamics simulationsMolecular dynamics simulationsBucklingCofilin-decorated segmentsDeformationBendingBoundariesEnergy distributionLoadFilament model
2016
Cations Stiffen Actin Filaments by Adhering a Key Structural Element to Adjacent Subunits
Hocky GM, Baker JL, Bradley MJ, Sinitskiy AV, De La Cruz EM, Voth GA. Cations Stiffen Actin Filaments by Adhering a Key Structural Element to Adjacent Subunits. The Journal Of Physical Chemistry B 2016, 120: 4558-4567. PMID: 27146246, PMCID: PMC4959277, DOI: 10.1021/acs.jpcb.6b02741.Peer-Reviewed Original ResearchConceptsActin filamentsRegulatory proteinsD-loopSite-specific mutagenesisSpecific divalent cationsFilament severingStructural bioinformaticsAdjacent subunitsAccessible conformational spaceSubunit conformationActin subunitsKey structural elementsAmino acidsLarge-scale changesConformational spaceSubunitsFilament mechanical propertiesProteinFilamentsDivalent cationsMagnesium ionsMolecular dynamics simulationsConformationSitesCofilin