Molecular simulations of beta-amyloid protein near hydrated lipids (PECASE).

[摘要] We performed molecular dynamics simulations of beta-amyloid (A{beta}) protein and A{beta} fragment(31-42) in bulk water and near hydrated lipids to study the mechanism of neurotoxicity associated with the aggregation of the protein. We constructed full atomistic models using Cerius2 and ran simulations using LAMMPS. MD simulations with different conformations and positions of the protein fragment were performed. Thermodynamic properties were compared with previous literature and the results were analyzed. Longer simulations and data analyses based on the free energy profiles along the distance between the protein and the interface are ongoing.

[发布日期] 2005-12-01 [发布机构] Sandia National Laboratories

[关键词] Free Energy;59 Basic Biological Sciences;Proteins;Thermodynamic Properties.;Simulation Protein-Analysis.