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- W2049085004 abstract "Characterizing the energy landscape of proteins at atomic resolution is still a very challenging problem, since it simultaneously requires high accuracy in estimating specific interactions and high efficiency in conformational sampling. Here, for these two requirements to meet, we extended the self-learning multiscale simulation (SLMS) method developed recently and applied it to the designed β-hairpin CLN025. The SLMS integrates all-atom and coarse-grained (CG) models in an iterative way such that the conformational sampling is performed by the CG model, the AA energy is used to calibrate the energy landscape, and the CG model is improved by the calibrated energy landscape. We extended the SLMS in two aspects, use of the energy decomposition for self-learning of the CG potential and a two-bead/residue CG model. The results show that the self-learning greatly improved the CG potential, and with the derived CG potential, the β-hairpin CLN025 robustly folded to the native structure. The self-learning iteration progressively enhanced the context dependence in the CG potential and increased the energy gap between the native and the denatured states of the CG model, leading to a funnel-like energy landscape. By using the SLMS method, without prior knowledge of the native structure but with the help of the AA energy, we can obtain a tailor-made CG potential specific to the target protein. The method can be useful for de novo structure prediction as well." @default.
- W2049085004 created "2016-06-24" @default.
- W2049085004 creator A5058504410 @default.
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- W2049085004 date "2010-11-01" @default.
- W2049085004 modified "2023-10-16" @default.
- W2049085004 title "Characterizing Protein Energy Landscape by Self-Learning Multiscale Simulations: Application to a Designed β-Hairpin" @default.
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- W2049085004 doi "https://doi.org/10.1016/j.bpj.2010.08.041" @default.
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