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• W2890189119 endingPage "5392" @default.
• W2890189119 startingPage "5383" @default.
• W2890189119 abstract "Halogen bonds (XBs) are non-covalent interactions in which halogens (X), acting as electrophiles, interact with Lewis bases. XBs are able to mediate protein-ligand recognition and therefore play an important role in rational drug design. In this context, the development of molecular modeling tools that can tackle XBs is paramount. XBs are predominantly explained by the existence of a positive region on the electrostatic potential of X named the σ-hole. Typically, with molecular mechanics force fields, this region is modeled using a charged extra point (EP) linked to X along the R-X covalent bond axis. In this work, we developed the first EP-based strategy for GROMOS force fields (specifically GROMOS 54A7) using bacteriophage T4 lysozyme in complex with both iodobenzene and iodopentafluorobenzene as a prototype system. Several EP parametrization schemes were tested by adding a virtual interaction site to ligand topologies retrieved from the Automated Topology Builder (ATB) and Repository. Contrary to previous approaches using other force fields, our analysis is based on the capability of each parametrization scheme to sample XBs during MD simulations. Our results indicate that the implementation of an EP at a distance from iodine corresponding to Rmin provides a good qualitative description of XBs in MD simulations, supporting the compatibility of our approach with the GROMOS 54A7 force field." @default.
• W2890189119 created "2018-09-27" @default.
• W2890189119 creator A5055215447 @default.
• W2890189119 creator A5057647309 @default.
• W2890189119 creator A5061806501 @default.
• W2890189119 creator A5070071494 @default.
• W2890189119 date "2018-09-14" @default.
• W2890189119 modified "2023-10-16" @default.
• W2890189119 title "Biomolecular Simulations of Halogen Bonds with a GROMOS Force Field" @default.
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