+検索条件
-Structure paper
タイトル | Molecular mechanism of setron-mediated inhibition of full-length 5-HT receptor. |
---|---|
ジャーナル・号・ページ | Nat Commun, Vol. 10, Issue 1, Page 3225, Year 2019 |
掲載日 | 2019年7月19日 |
著者 | Sandip Basak / Yvonne Gicheru / Abhijeet Kapoor / Megan L Mayer / Marta Filizola / Sudha Chakrapani / |
PubMed 要旨 | Serotonin receptor (5-HTR) is the most common therapeutic target to manage the nausea and vomiting during cancer therapies and in the treatment of irritable bowel syndrome. Setrons, a class of ...Serotonin receptor (5-HTR) is the most common therapeutic target to manage the nausea and vomiting during cancer therapies and in the treatment of irritable bowel syndrome. Setrons, a class of competitive antagonists, cause functional inhibition of 5-HTR in the gastrointestinal tract and brainstem, acting as effective anti-emetic agents. Despite their prevalent use, the molecular mechanisms underlying setron binding and inhibition of 5-HTR are not fully understood. Here, we present the structure of granisetron-bound full-length 5-HTR solved by single-particle cryo-electron microscopy to 2.92 Å resolution. The reconstruction reveals the orientation of granisetron in the orthosteric site with unambiguous density for interacting sidechains. Molecular dynamics simulations and electrophysiology confirm the granisetron binding orientation and the residues central for ligand recognition. Comparison of granisetron-bound 5-HTR with the apo and serotonin-bound structures, reveals key insights into the mechanism underlying 5-HTR inhibition. |
リンク | Nat Commun / PubMed:31324772 / PubMed Central |
手法 | EM (単粒子) |
解像度 | 2.92 Å |
構造データ | |
化合物 | ChemComp-NAG: ChemComp-CWB: ChemComp-CL: |
由来 |
|
キーワード | MEMBRANE PROTEIN |