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• W2049623642 abstract "Herein we introduce a novel practical strategy to overcome the well-known challenge of modeling the divalent zinc cation in metalloproteins. The main idea is to design short−long effective functions (SLEF) to describe charge interactions between the zinc ion and all other atoms. This SLEF approach has the following desired features: (1) It is pairwise, additive, and compatible with widely used atomic pairwise force fields for modeling biomolecules; (2) It only changes interactions between the zinc ion and other atoms and does not affect force field parameters that model other interactions in the system; (3) It is a nonbonded model that is inherently capable to describe different zinc ligands and coordination modes. By optimizing two SLEF parameters as well as zinc van der Waals parameters through force matching based on Born−Oppenheimer ab initio quantum mechanical/molecular mechanical (QM/MM) molecular dynamics (MD) simulations, we have successfully developed the first SLEF force field (SLEF1) to describe zinc interactions. Extensive MD simulations of seven zinc enzyme systems with different coordination ligands and distinct chelation modes (four-, five-, and six-fold), including a binuclear zinc active site, yielded zinc coordination numbers and binding distances in good agreement with the corresponding crystal structures as well as ab initio QM/MM MD results. This not only demonstrates the transferability and adequacy of the new SLEF1 force field in describing a variety of zinc proteins but also indicates that this novel SLEF approach is a promising direction to explore for improving force field description of metal ion interactions." @default.
• W2049623642 created "2016-06-24" @default.
• W2049623642 creator A5018002453 @default.
• W2049623642 creator A5054978325 @default.
• W2049623642 creator A5063629758 @default.
• W2049623642 creator A5065291000 @default.
• W2049623642 date "2010-12-23" @default.
• W2049623642 modified "2023-09-25" @default.
• W2049623642 title "A Transferable Nonbonded Pairwise Force Field to Model Zinc Interactions in Metalloproteins" @default.
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• W2049623642 doi "https://doi.org/10.1021/ct100525r" @default.
• W2049623642 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/3087386" @default.
• W2049623642 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/21552372" @default.
• W2049623642 hasPublicationYear "2010" @default.
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