Speciation of copper-peptide complexes in water solution using DFTB and DFT approaches: case of the [Cu(HGGG)(Py)] complex.
Speciation of copper-peptide complexes in water solution using DFTB and DFT approaches: case of the [Cu(HGGG)(Py)] complex.
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使用 DFTB 和 DFT 方法对水溶液中的铜-肽复合物进行形态分析:[Cu(HGGG)(Py)] 复合物的案例。
DOI:
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发表时间:
2012
影响因子:
3.3
通讯作者:
P. Fantucci
中科院分区:
文献类型:
--
作者:
M. Bruschi;L. Bertini;V. Bonačić‐Koutecký;L. De Gioia;R. Mitrić;Giuseppe Zampella;P. Fantucci
The DFTB and DFT methods are applied to the study of different forms of the [Cu(HGGG)(Py)] complex in water, with the aim of identifying the most stable isomer. The DFTB calculations were possible thanks to a careful parametrization of the atom-atom repulsive energy terms for Cu-H, Cu-C, Cu-N, and Cu-O. The speciation process is carried out by computing different DFTB-steered molecular dynamics (SMD) trajectories, each of which ends in a well-defined different form. The last frame of each trajectory is subjected to geometry optimization at both DFTB and DFT levels, leading to a different isomer. From the corresponding energy values, a rank of relative stability of the isomers can be established. The computational protocol developed here is of general applicability to other metal-peptide systems and represents a new powerful tool for the study of speciation of metal-containing systems in water solution, particularly useful when the full characterization of the compound cannot be carried out on the basis of experimental results only.
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影响因子:
3.3
作者:
Wu, Shanshan;Zhang, Chunchun;Cao, Ruyin;Xu, Dingguo;Guo, Hua
通讯作者:
Guo, Hua
影响因子:
2.9
作者:
Burns, CS;Aronoff-Spencer, E;Millhauser, GL
通讯作者:
Millhauser, GL
影响因子:
3.3
作者:
Riccardi, D;Schaefer, P;Cui, Q
通讯作者:
Cui, Q
影响因子:
2.9
作者:
Stöckel, J;Safar, J;Prusiner, SB
通讯作者:
Prusiner, SB
影响因子:
3.3
作者:
Wu, Shanshan;Zhang, Chunchun;Xu, Dingguo;Guo, Hua
通讯作者:
Guo, Hua