Multi- e GO: Model Improvements toward the Study of Complex Self-Assembly Processes

Abstract

High Resolution Image Download MS PowerPoint Slide Structure-based models have been instrumental in simulating protein folding and suggesting hypotheses about the mechanisms involved. Nowadays, at least for fast-folding proteins, folding can be simulated in explicit solvent using classical molecular dynamics. However, other self-assembly processes, such as protein aggregation, are still far from being accessible. Recently, we proposed that a hybrid multistate structure-based model, multi- e GO, could help to bridge the gap toward the simulation of out-of-equilibrium, concentration-dependent self-assembly processes. Here, we further improve the model and show how multi- e GO can effectively and accurately learn the conformational ensemble of the amyloid β42 intrinsically disordered peptide, reproduce the well-established folding mechanism of the B1 immunoglobulin-binding domain of streptococcal protein G, and reproduce the aggregation as a function of the concentration of the transthyretin 105–115 amyloidogenic peptide. We envision that by learning from the dynamics of a few minima, multi- e GO can become a platform for simulating processes inaccessible to other simulation techniques.