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-Structure paper
| タイトル | High-Throughput Identification and Characterization of LptDE-Binding Bicycle Peptides Using Phage Display and Cryo-EM. |
|---|---|
| ジャーナル・号・ページ | J Med Chem, Vol. 68, Issue 20, Page 21144-21155, Year 2025 |
| 掲載日 | 2025年10月23日 |
著者 | Shenaz Allyjaun / Emily Dunbar / Steven W Hardwick / Sarah Newell / Finn Holding / Catherine E Rowland / Megan A St Denis / Simone Pellegrino / Gustavo Arruda Bezerra / Nikolaos Bournakas / Dimitri Y Chirgadze / Lee Cooper / Giulia Paris / Nick Lewis / Peter Brown / Michael J Skynner / Michael J Dawson / Paul Beswick / Julia Hubbard / Bert van den Berg / Hector Newman / ![]() |
| PubMed 要旨 | The lipopolysaccharide (LPS) transport (Lpt) system in Gram-negative bacteria maintains the integrity of the asymmetric bacterial outer membrane (OM). LPS biogenesis systems are essential in most ...The lipopolysaccharide (LPS) transport (Lpt) system in Gram-negative bacteria maintains the integrity of the asymmetric bacterial outer membrane (OM). LPS biogenesis systems are essential in most Gram-negative bacteria, with LptDE responsible for the delivery of LPS to the outer leaflet of the OM. As an externally accessible, essential protein, LptDE offers a promising target for inhibitor development without the need for cellular penetration. However, there are no direct inhibitors of LptDE, and drug discovery is made challenging since it is a membrane target without a conventional active site. Here, the bicycle phage display platform was used in combination with cryogenic-electron microscopy (cryo-EM) and surface plasmon resonance to identify and map bicyclic peptide binders to LptDE (SfLptDE). Four distinct epitopes with unique bicycle molecule binding motifs were identified across the SfLptD β-barrel. This method represents a streamlined workflow for the identification and prioritization of hit molecules against LptDE. |
リンク | J Med Chem / PubMed:41048016 / PubMed Central |
| 手法 | EM (単粒子) |
| 解像度 | 2.35 - 2.86 Å |
| 構造データ | EMDB-52749, PDB-9i92: EMDB-52750, PDB-9i93: EMDB-52751, PDB-9i94: EMDB-52752, PDB-9i95: EMDB-52753, PDB-9i96: EMDB-52754, PDB-9i97: EMDB-52755, PDB-9i98: EMDB-52896, PDB-9q8n: |
| 化合物 | ![]() ChemComp-LMT: ![]() PDB-1i1d: ![]() ChemComp-KZ0: ![]() PDB-1i1e: ![]()
ChemComp-R06: ![]() ChemComp-HOH: ![]() ChemComp-PLM: ![]() ChemComp-Z41: ![]() PDB-1i4o: |
| 由来 |
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キーワード | MEMBRANE PROTEIN / outer membrane protein / lipid transport / Outer membrane / LPS transport |
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shigella flexneri (フレクスナー赤痢菌)
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