Promiscuity and selectivity in covalent enzyme inhibition: a systematic study of electrophilic fragments
Covalent ligand-target interactions offer significant pharmacological advantages. However, off-target reactivity of the reactive groups, which usually have electrophilic properties, must be minimized, and the selectivity of irreversible inhibitors is a crucial requirement. We therefore performed a s...
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| Main Authors: | , , , , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
August 22, 2014
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| In: |
Journal of medicinal chemistry
Year: 2014, Volume: 57, Issue: 18, Pages: 7590-7599$10 |
| ISSN: | 1520-4804 |
| DOI: | 10.1021/jm5006918 |
| Online Access: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1021/jm5006918
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| Author Notes: | Christian Jöst, Christoph Nitsche, Therese Scholz, Lionel Roux, and Christian D. Klein |
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| 520 | |a Covalent ligand-target interactions offer significant pharmacological advantages. However, off-target reactivity of the reactive groups, which usually have electrophilic properties, must be minimized, and the selectivity of irreversible inhibitors is a crucial requirement. We therefore performed a systematic study to determine the selectivity of several electrophilic groups that can be used as building blocks for covalently binding ligands. Six reactive groups with modulated electrophilicity were combined with 11 nonreactive moieties, resulting in a small combinatorial library of 72 fragment-like compounds. These compounds were screened against a group of 11 enzyme targets to assess their selectivity and their potential for promiscuous binding to proteins. The assay results showed a considerably lower degree of promiscuity than initially expected, even for those members of the screening collection that contain supposedly highly reactive electrophiles. | ||
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