ArticleACS omega2021
Effect of Charge Distribution in a Modified tRNA Substrate on Pre-Reaction Protein-tRNA Complex Geometry.
Article in ACS omega, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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0 citing papers in PubMed, 3 citations in OpenAlex.
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Authors and funding
5 authors at 3 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
An important aspect of molecular mechanics simulations of a protein structure and ligand binding often involves the generation of reliable force fields for nonstandard residues and ligands. We consider the aminoacyl-tRNA synthetase (AaRS) system that involves nucleic acid and amino acid derivatives, obtaining force field atomic charges using the restrained electrostatic potential (RESP) approach. These charges are shown to predict observed properties of the post-transfer editing reaction in this system, in contrast to simulations performed using approximate charges conceived based upon standard charges for related systems present in force field databases. In particular, the simulations predicted key properties induced by mutation. The approach taken for generating the RESP charges retains established charges for known fragments, defining new charges only for the novel chemical features present in the modified residues. This approach is of general relevance for the design of force fields for pharmacological applications, and indeed the AaRS target system is itself relevant to antibiotics development.
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Registered trials
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