0000000000068020

AUTHOR

Gianluca Lattanzi

0000-0002-0808-6457

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Multiphoton Absorption of Myoglobin Nitric-Oxide complex: Relaxation by D-NEMD of a Stationary State

2012

ABSTRACT: The photodissociation and geminate recombination of nitric oxide in myoglobin, under continuous illumination, is modeled computationally. The relaxation of the photon energy into the protein matrix is also considered in a single simulation scheme that mimics a complete experimental setup. The dynamic approach to non-equilibrium molecular dynamics is used, starting from a steady state, to compute its relaxation to equilibrium. Simulations are conducted for the native form of sperm whale myoglobin and for two other mutants, V68W and L29F, illustrating a fair diversity of spatial and temporal geminate recombination processes. Energy flow to the heme and immediate protein environment …

myoglobin molecular dynamics simulations non equilibriumThermal fluctuationsMolecular Dynamics SimulationNitric OxideArticleAbsorptionchemistry.chemical_compoundMolecular dynamicsComputational chemistryMaterials ChemistryPhysical and Theoretical ChemistryHemePhotonsSteady stateChemistryMyoglobinPhotodissociationTemperatureSettore FIS/07 - Fisica Applicata(Beni Culturali Ambientali Biol.e Medicin)Recombinant ProteinsSurfaces Coatings and FilmsProtein Structure TertiaryMyoglobinChemical physicsMutationRelaxation (physics)Stationary stateProtein Binding
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