PT - JOURNAL ARTICLE AU - Lindorff-Larsen, Kresten AU - Piana, Stefano AU - Dror, Ron O. AU - Shaw, David E. TI - How Fast-Folding Proteins Fold AID - 10.1126/science.1208351 DP - 2011 Oct 28 TA - Science PG - 517--520 VI - 334 IP - 6055 4099 - http://science.sciencemag.org/content/334/6055/517.short 4100 - http://science.sciencemag.org/content/334/6055/517.full SO - Science2011 Oct 28; 334 AB - An outstanding challenge in the field of molecular biology has been to understand the process by which proteins fold into their characteristic three-dimensional structures. Here, we report the results of atomic-level molecular dynamics simulations, over periods ranging between 100 μs and 1 ms, that reveal a set of common principles underlying the folding of 12 structurally diverse proteins. In simulations conducted with a single physics-based energy function, the proteins, representing all three major structural classes, spontaneously and repeatedly fold to their experimentally determined native structures. Early in the folding process, the protein backbone adopts a nativelike topology while certain secondary structure elements and a small number of nonlocal contacts form. In most cases, folding follows a single dominant route in which elements of the native structure appear in an order highly correlated with their propensity to form in the unfolded state.