+検索条件
-Structure paper
| タイトル | Cryo-EM structure of the human histamine H receptor/G complex. |
|---|---|
| ジャーナル・号・ページ | Nat Commun, Vol. 12, Issue 1, Page 2086, Year 2021 |
| 掲載日 | 2021年4月7日 |
著者 | Ruixue Xia / Na Wang / Zhenmei Xu / Yang Lu / Jing Song / Anqi Zhang / Changyou Guo / Yuanzheng He / ![]() |
| PubMed 要旨 | Histamine receptors play important roles in various pathophysiological conditions and are effective targets for anti-allergy treatment, however the mechanism of receptor activation remain elusive. ...Histamine receptors play important roles in various pathophysiological conditions and are effective targets for anti-allergy treatment, however the mechanism of receptor activation remain elusive. Here, we present the cryo-electron microscopy (cryo-EM) structure of the human HR in complex with a G protein in an active conformation via a NanoBiT tethering strategy. The structure reveals that histamine activates receptor via interacting with the key residues of both transmembrane domain 3 (TM3) and TM6 to squash the binding pocket on the extracellular side and to open the cavity on the intracellular side for G engagement in a model of "squash to activate and expand to deactivate". The structure also reveals features for G coupling, including the interaction between intracellular loop 2 (ICL2) and the αN-β junction of G protein. The detailed analysis of our structure will provide a framework for understanding G-protein coupling selectivity and clues for designing novel antihistamines. |
リンク | Nat Commun / PubMed:33828102 / PubMed Central |
| 手法 | EM (単粒子) |
| 解像度 | 3.3 Å |
| 構造データ | EMDB-30665, PDB-7dfl: |
| 化合物 | ![]() ChemComp-HSM: |
| 由来 |
|
キーワード | MEMBRANE PROTEIN / complex |
ムービー
コントローラー
構造ビューア
万見文献について



著者
リンク


homo sapiens (ヒト)
キーワード