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论文题目: Local Mode Analysis: Decoding IR Spectra by Visualizing Molecular Details
英文论文题目: Local Mode Analysis: Decoding IR Spectra by Visualizing Molecular Details
第一作者: Massarczyk, M; Rudack, T; Schlitter, J; Kuhne, J; Kotting, C; Gerwert, K
英文第一作者: Massarczyk, M; Rudack, T; Schlitter, J; Kuhne, J; Kotting, C; Gerwert, K
联系作者: Gerwert, K (reprint author), Chinese Acad Sci, Max Planck Partner Inst Computat Biol PICB, SIBS, Shanghai 200031, Peoples R China.
英文联系作者: Gerwert, K (reprint author), Chinese Acad Sci, Max Planck Partner Inst Computat Biol PICB, SIBS, Shanghai 200031, Peoples R China.
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发表年度: 2017
卷: 121
期: 15
页码: 3483-3492
摘要: Integration of experimental and computational approaches to investigate chemical reactions in proteins has proven to be very successful. Experimentally, time-resolved FTIR difference-spectroscopy monitors chemical reactions at atomic detail. To, decode detailed structural information encoded in IR spectra, QM/MM calculations are performed. Here, we present a novel method which we call local mode analysis (LMA) for calculating IR spectra and assigning spectral IR-bands on the basis of movements of nuclei and partial charges from just a single QM/MM trajectory. Through LMA the decoding of IR spectra no longer requires several simulations or optimizations. The novel, approach correlates,the motions of atoms Of a single simulation with the corresponding IR bands and provides direct access to the structural information encoded in IR spectra. Either the contributions of a particular atom or atom group to the complete IR spectrum of the molecule are visualized, or an IR-band is selected to visualize the corresponding structural motions. Thus, LMA decodes the detailed information contained in IR spectra and provides an intuitive approach for structural biologists and biochemists The unique feature of LMA is the bidirectional analysis connecting structural details to spectral features and vice versa spectral features to molecular motions.
英文摘要: Integration of experimental and computational approaches to investigate chemical reactions in proteins has proven to be very successful. Experimentally, time-resolved FTIR difference-spectroscopy monitors chemical reactions at atomic detail. To, decode detailed structural information encoded in IR spectra, QM/MM calculations are performed. Here, we present a novel method which we call local mode analysis (LMA) for calculating IR spectra and assigning spectral IR-bands on the basis of movements of nuclei and partial charges from just a single QM/MM trajectory. Through LMA the decoding of IR spectra no longer requires several simulations or optimizations. The novel, approach correlates,the motions of atoms Of a single simulation with the corresponding IR bands and provides direct access to the structural information encoded in IR spectra. Either the contributions of a particular atom or atom group to the complete IR spectrum of the molecule are visualized, or an IR-band is selected to visualize the corresponding structural motions. Thus, LMA decodes the detailed information contained in IR spectra and provides an intuitive approach for structural biologists and biochemists The unique feature of LMA is the bidirectional analysis connecting structural details to spectral features and vice versa spectral features to molecular motions.
刊物名称: JOURNAL OF PHYSICAL CHEMISTRY B
英文刊物名称: JOURNAL OF PHYSICAL CHEMISTRY B
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学科: Chemistry, Physical
英文学科: Chemistry, Physical
影响因子: 3.177
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论文类别: Article
英文论文类别: Article
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