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-Structure paper
| タイトル | An Optimized Route to the Syringolin Natural Products Enables Combinatorial Synthesis of Selective, Bioactive Inhibitors of the 20S Proteasome. |
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| ジャーナル・号・ページ | J Med Chem, Vol. 69, Issue 8, Page 8897-8914, Year 2026 |
| 掲載日 | 2026年4月23日 |
著者 | Xilin Gu / Pavla Fajtova / Nicholas L Yan / Aditi Saxena / Fan Fei / Jiyun Zhu / Eric Tse / Arthur Melo / Euna Yoo / Nathan H Buchwald / Daniel R Southworth / Matthew Bogyo / Joseph L Derisi / Jason E Gestwicki / Anthony J O'Donoghue / Jason K Sello / ![]() |
| PubMed 要旨 | The syringolin natural products are covalent inhibitors of the 20S proteasome that inspire therapeutic development. Here, we report a new route to the syringolins amenable to solution and solid-phase ...The syringolin natural products are covalent inhibitors of the 20S proteasome that inspire therapeutic development. Here, we report a new route to the syringolins amenable to solution and solid-phase synthesis that overcomes a problematic macrocyclization. Exploiting our synthetic approach and substrate mimicry models for proteasome inhibition by the syringolins, we generated a collection of hypothetically selective inhibitors of the proteasome, which is an emerging target for antimalarial drugs. We identified compounds from the library having high second-order rate constants for proteasome inhibition and nanomolar antiparasitic activity. They exhibited selectivity for the proteasome over the human proteasome. We solved cryo-EM structures of an inhibitor bound to both 20S proteasomes, revealing key contacts favoring species-selective inhibition. Together, this work provides an improved route to syringolin analogs, sheds new light on substrate mimicry by the syringolins, and provides a structural basis for the pursuit of new antimalarial drugs. |
リンク | J Med Chem / PubMed:41921688 |
| 手法 | EM (単粒子) |
| 解像度 | 2.6 - 2.7 Å |
| 構造データ | EMDB-73509, PDB-9yuy: EMDB-73510, PDB-9yuz: |
| 化合物 | ![]() PDB-1cy6: ![]() PDB-1cy5: |
| 由来 |
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キーワード | HYDROLASE / Proteasome / 20S / Inhibitor / Plasmodium / Covalent |
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homo sapiens (ヒト)
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