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-Structure paper
| タイトル | Discovery of Selective Inhibitors for the Lysosomal Parkinson's Disease Channel TMEM175. |
|---|---|
| ジャーナル・号・ページ | J Am Chem Soc, Vol. 146, Issue 33, Page 23230-23239, Year 2024 |
| 掲載日 | 2024年8月21日 |
著者 | SeCheol Oh / Jooyeon Lee / Ho Jeong Choi / Songwon Kim / Vinay Sapuru / Min Kim / Richard K Hite / ![]() |
| PubMed 要旨 | TMEM175 is a lysosomal potassium and proton channel that is associated with the development of Parkinson's disease. Advances in understanding the physiological roles of TMEM175 have been hampered by ...TMEM175 is a lysosomal potassium and proton channel that is associated with the development of Parkinson's disease. Advances in understanding the physiological roles of TMEM175 have been hampered by the absence of selective inhibitors, and studies involving genetic perturbations have yielded conflicting results. Here, we report the discovery and characterization of the first reported TMEM175-selective inhibitors, 2-phenylpyridin-4-ylamine (2-PPA), and AP-6. Cryo-EM structures of human TMEM175 bound by 2-PPA and AP-6 reveal that they act as pore blockers, binding at distinct sites in the pore and occluding the ion permeation pathway. Acute inhibition of TMEM175 by 2-PPA or AP-6 increases the level of lysosomal macromolecule catabolism, thereby accelerating macropinocytosis and other digestive processes. These inhibitors may serve as valuable tools to study the roles of TMEM175 in regulating lysosomal function and provide useful templates for future therapeutic development in Parkinson's disease. |
リンク | J Am Chem Soc / PubMed:39116214 / PubMed Central |
| 手法 | EM (単粒子) |
| 解像度 | 3.48 - 3.52 Å |
| 構造データ | EMDB-43257, PDB-8vic: EMDB-43259, PDB-8vie: |
| 化合物 | ![]() PDB-1aa3: ![]() PDB-1ab0: |
| 由来 |
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キーワード | TRANSPORT PROTEIN / Ion Channel / Lysosome / Potassium Channel / MEMBRANE PROTEIN |
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