Modeling solution X-ray scattering of biomacromolecules using an explicit solvent model and the fast Fourier transform

A novel computational method based on atomic form factors and the fast Fourier transform (FFT) is developed to compute small- and near-wide-angle X-ray scattering profiles of biomacromolecules from explicit solvent modeling. The method is validated by comparing the results with those from non-FFT ap...

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Main Authors: Tong, Dudu, Yang, Jianbin, Lu, Lanyuan
其他作者: School of Biological Sciences
格式: Article
語言:English
出版: 2015
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在線閱讀:https://hdl.handle.net/10356/81221
http://hdl.handle.net/10220/39189
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機構: Nanyang Technological University
語言: English
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總結:A novel computational method based on atomic form factors and the fast Fourier transform (FFT) is developed to compute small- and near-wide-angle X-ray scattering profiles of biomacromolecules from explicit solvent modeling. The method is validated by comparing the results with those from non-FFT approaches and experiments, and good agreement with experimental data is observed for both small and near-wide angles. In terms of computational efficiency, the FFT-based method is advantageous for protein solution systems of more than 3000 atoms. Furthermore, the computational cost remains nearly constant for a wide range of system sizes. The FFT-based approach can potentially handle much larger molecular systems compared with popular existing methods.