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- W3136989458 abstract "Macrocyclic peptides are an important modality in drug discovery, but molecular design is limited due to the complexity of their conformational landscape. To better understand conformational propensities, global strain energies were estimated for 156 protein-macrocyclic peptide cocrystal structures. Unexpectedly large strain energies were observed when the bound-state conformations were modeled with positional restraints. Instead, low-energy conformer ensembles were generated using xGen that fit experimental X-ray electron density maps and gave reasonable strain energy estimates. The ensembles featured significant conformational adjustments while still fitting the electron density as well or better than the original coordinates. Strain estimates suggest the interaction energy in protein–ligand complexes can offset a greater amount of strain for macrocyclic peptides than for small molecules and non-peptidic macrocycles. Across all molecular classes, the approximate upper bound on global strain energies had the same relationship with molecular size, and bound-state ensembles from xGen yielded favorable binding energy estimates." @default.
- W3136989458 created "2021-03-29" @default.
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- W3136989458 date "2021-03-16" @default.
- W3136989458 modified "2023-10-15" @default.
- W3136989458 title "Conformational Strain of Macrocyclic Peptides in Ligand–Receptor Complexes Based on Advanced Refinement of Bound-State Conformers" @default.
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- W3136989458 doi "https://doi.org/10.1021/acs.jmedchem.0c02159" @default.
- W3136989458 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/33724820" @default.
- W3136989458 hasPublicationYear "2021" @default.
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