@Article{CiCP-33-57, author = {Lauricella , MarcoChiodo , LetiziaBonaccorso , FabioDurve , MihirMontessori , AndreaTiribocchi , AdrianoLoppini , AlessandroFilippi , Simonetta and Succi , Sauro}, title = {Multiscale Hybrid Modeling of Proteins in Solvent: SARS-CoV2 Spike Protein as Test Case for Lattice Boltzmann — All Atom Molecular Dynamics Coupling}, journal = {Communications in Computational Physics}, year = {2023}, volume = {33}, number = {1}, pages = {57--76}, abstract = {

Physiological solvent flows surround biological structures triggering therein collective motions. Notable examples are virus/host-cell interactions and solvent-mediated allosteric regulation. The present work describes a multiscale approach joining the Lattice Boltzmann fluid dynamics (for solvent flows) with the all-atom atomistic molecular dynamics (for proteins) to model functional interactions between flows and molecules. We present, as an applicative scenario, the study of the SARS-CoV-2 virus spike glycoprotein protein interacting with the surrounding solvent, modeled as a mesoscopic fluid. The equilibrium properties of the wild-type spike and of the Alpha variant in implicit solvent are described by suitable observables. The mesoscopic solvent description is critically compared to the all-atom solvent model, to quantify the advantages and limitations of the mesoscopic fluid description.

}, issn = {1991-7120}, doi = {https://doi.org/10.4208/cicp.OA-2022-0046}, url = {http://global-sci.org/intro/article_detail/cicp/21425.html} }