Abstract
Human diseases, such as Alzheimer's and Creutzfeldt-Jakob's are associated with misfolding and aggregation of specific proteins into amyloid fibrils sharing a generic cross-beta structure. The self-assembly process is complex, but once a nucleus is formed, rapid fibril formation occurs. Insight into the structures of the oligomers during the lag phase, varying between hours and days, is very difficult experimentally because these species are transient, and numerically using all-atom molecular dynamics because the time scale explored is on the order of 10-100 ns. It is therefore important to develop simplified protein models and alternative methods to sample more efficiently the conformational space. In the past few years, we have developed the activation-relaxation technique (ART nouveau) coupled to the OPEP coarse-grained force field. This review reports the application of ART-OPEP on protein folding and aggregation.
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