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-Structure paper
| タイトル | Structural basis for Porcupine inhibition. |
|---|---|
| ジャーナル・号・ページ | Commun Chem, Vol. 8, Issue 1, Page 348, Year 2025 |
| 掲載日 | 2025年11月12日 |
著者 | Katrina A Black / Jesse I Mobbs / Hariprasad Venugopal / Toby A Dite / Andrew Leis / Lilian Ll Wong / Laura F Dagley / David M Thal / Alisa Glukhova / ![]() |
| PubMed 要旨 | Wnt signalling is essential for embryonic development and tissue homeostasis, and its dysregulation is associated with multiple types of cancer. Porcupine (PORCN), an endoplasmic reticulum (ER)- ...Wnt signalling is essential for embryonic development and tissue homeostasis, and its dysregulation is associated with multiple types of cancer. Porcupine (PORCN), an endoplasmic reticulum (ER)-resident membrane-bound O-acyltransferase, catalyses the palmitoleoylation of all 19 human Wnts-a critical modification required for their secretion and activity. This central role makes PORCN an attractive therapeutic target for Wnt-driven cancers, with several inhibitors currently in clinical trials. Here, we present high-resolution cryo-electron microscopy structures of human PORCN in complex with the inhibitors C59 (2.4 Å) and ETC159 (2.6 Å), as well as in a ligand-free state (3.3 Å). These structures reveal critical ordered water molecules that form a hydrogen-bonding network within the active site, mediating inhibitor binding. Our docking simulations of diverse PORCN inhibitors demonstrate that despite their different chemical scaffolds, these compounds adopt similar conformations within the acyl-CoA binding site and are also engaged through a conserved water molecule. Our findings provide a structural foundation for the rational design of next-generation PORCN inhibitors with improved pharmacological properties for cancer therapy. |
リンク | Commun Chem / PubMed:41225132 / PubMed Central |
| 手法 | EM (単粒子) |
| 解像度 | 2.39 - 3.32 Å |
| 構造データ | EMDB-70660, PDB-9oo6: EMDB-70661, PDB-9oo7: EMDB-70662, PDB-9oo8: |
| 化合物 | ![]() PDB-1cc5: ![]() ChemComp-AV0: ![]() ChemComp-ZN: ![]() ChemComp-HOH: ![]() PDB-1cc6: |
| 由来 |
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キーワード | MEMBRANE PROTEIN / transmembrane protein / MBOAT / acylase / Wnt acylase / enzyme / ER |
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