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-Structure paper
| タイトル | Insights into the structure and modulation of human TWIK-2. |
|---|---|
| ジャーナル・号・ページ | Nat Commun, Vol. 17, Issue 1, Year 2026 |
| 掲載日 | 2026年1月31日 |
著者 | Qianqian Ma / Ciria C Hernandez / Vikas Navratna / Arvind Kumar / Jaimin K Rana / Jiameng Zong / Abraham Lee / Shyamal Mosalaganti / ![]() |
| PubMed 要旨 | The Tandem of pore domain in a Weak Inward Rectifying K channel 2 (TWIK-2; KCNK6) is a member of the Two-Pore Domain K (K) channel family, which is associated with pulmonary hypertension, lung ...The Tandem of pore domain in a Weak Inward Rectifying K channel 2 (TWIK-2; KCNK6) is a member of the Two-Pore Domain K (K) channel family, which is associated with pulmonary hypertension, lung injury, and inflammation. Despite its physiological relevance, the structure, regulatory mechanisms, and selective modulators of TWIK-2 remain largely unknown. Here, we present a 3.7 Å single particle cryo-electron microscopy structure of human TWIK-2 and highlight its conserved and distinctive features. Using automated whole-cell patch clamp recordings, we demonstrate that gating in TWIK-2 is voltage-dependent and insensitive to changes in the extracellular pH. We identify key residues that influence TWIK-2 activity by employing site-directed mutagenesis and provide insights into the possible lipid-mediated mechanism of TWIK-2 regulation. Additionally, we demonstrate the application of high-throughput automated whole-cell patch clamp platforms to screen small molecule modulators of TWIK-2. Our work serves as a foundation for designing high-throughput small molecule screening campaigns to identify specific high-affinity TWIK-2 modulators, including promising- anti-inflammatory therapeutics. |
リンク | Nat Commun / PubMed:41617707 / PubMed Central |
| 手法 | EM (単粒子) |
| 解像度 | 3.67 Å |
| 構造データ | EMDB-47768, PDB-9e94: |
| 化合物 | ![]() ChemComp-D10: ![]() ChemComp-K: |
| 由来 |
|
キーワード | TRANSPORT PROTEIN / Potassium ion channel K2P |
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