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-Structure paper
| タイトル | Butyrolactol A enhances caspofungin efficacy via flippase inhibition in drug-resistant fungi. |
|---|---|
| ジャーナル・号・ページ | Cell, Vol. 189, Issue 2, Page 620-639.e28, Year 2026 |
| 掲載日 | 2026年1月22日 |
著者 | Xuefei Chen / H Diessel Duan / Michael J Hoy / Kalinka Koteva / Michaela Spitzer / Allison K Guitor / Emily Puumala / Aline A Fiebig / Guanggan Hu / Bonnie Yiu / Sommer Chou / Zhuyun Bian / Yeseul Choi / Amelia Bing Ya Guo / Wenliang Wang / Sheng Sun / Nicole Robbins / Anna Floyd Averette / Michael A Cook / Ray Truant / Lesley T MacNeil / Eric D Brown / James W Kronstad / Brian K Coombes / Leah E Cowen / Joseph Heitman / Huilin Li / Gerard D Wright / ![]() |
| PubMed 要旨 | Fungal infections cause millions of deaths annually and are challenging to treat due to limited therapeutic options and rising resistance. Cryptococci are intrinsically resistant to the latest ...Fungal infections cause millions of deaths annually and are challenging to treat due to limited therapeutic options and rising resistance. Cryptococci are intrinsically resistant to the latest generation of antifungals, echinocandins, while Candida auris, a notorious global threat, is also increasingly resistant. We performed a natural product screen to rescue caspofungin fungicidal activity against Cryptococcus neoformans H99 and identified butyrolactol A, which restores echinocandin efficacy against resistant fungal pathogens, including multidrug-resistant C. auris. Mode-of-action studies reveal that butyrolactol A inhibits the phospholipid flippase Apt1-Cdc50, blocking phospholipid transport. Cryo-electron microscopy analysis of the Apt1-butyrolactol A complex reveals that the flippase is trapped in a dead-end state. Apt1 inhibition disrupts membrane asymmetry, vesicular trafficking, and cytoskeletal organization, thereby enhancing echinocandin uptake and potency. This study identifies lipid flippases as promising antifungal targets and demonstrates the potential of revisiting natural products to expand the antifungal arsenal and combat resistance. |
リンク | Cell / PubMed:41478284 / PubMed Central |
| 手法 | EM (単粒子) |
| 解像度 | 2.95 - 3.27 Å |
| 構造データ | EMDB-47339, PDB-9dzv: EMDB-70618, PDB-9omv: |
| 化合物 | ![]() ChemComp-NAG: ![]() ChemComp-MG: ![]() ChemComp-BEF: ![]() PDB-1bd6: |
| 由来 |
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キーワード | LIPID TRANSPORT / Cryptococcus neoformans / lipid flippase / P4-ATPase / Cdc50 protein / butyrolactol A / TRANSLOCASE/INHIBITOR / TRANSLOCASE-INHIBITOR complex |
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cryptococcus neoformans var. grubii h99 (菌類)
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