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-Structure paper
タイトル | Cryo-EM structure of the β3-adrenergic receptor reveals the molecular basis of subtype selectivity. |
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ジャーナル・号・ページ | Mol Cell, Vol. 81, Issue 15, Page 3205-33215.e5, Year 2021 |
掲載日 | 2021年8月5日 |
著者 | Chisae Nagiri / Kazuhiro Kobayashi / Atsuhiro Tomita / Masahiko Kato / Kan Kobayashi / Keitaro Yamashita / Tomohiro Nishizawa / Asuka Inoue / Wataru Shihoya / Osamu Nureki / |
PubMed 要旨 | The β-adrenergic receptor (βAR) is predominantly expressed in adipose tissue and urinary bladder and has emerged as an attractive drug target for the treatment of type 2 diabetes, obesity, and ...The β-adrenergic receptor (βAR) is predominantly expressed in adipose tissue and urinary bladder and has emerged as an attractive drug target for the treatment of type 2 diabetes, obesity, and overactive bladder (OAB). Here, we report the cryogenic electron microscopy structure of the βAR-G signaling complex with the selective agonist mirabegron, a first-in-class drug for OAB. Comparison of this structure with the previously reported βAR and βAR structures reveals a receptor activation mechanism upon mirabegron binding to the orthosteric site. Notably, the narrower exosite in βAR creates a perpendicular pocket for mirabegron. Mutational analyses suggest that a combination of both the exosite shape and the amino-acid-residue substitutions defines the drug selectivity of the βAR agonists. Our findings provide a molecular basis for βAR subtype selectivity, allowing the design of more-selective agents with fewer adverse effects. |
リンク | Mol Cell / PubMed:34314699 |
手法 | EM (単粒子) |
解像度 | 3.16 - 3.3 Å |
構造データ | EMDB-30678, PDB-7dh5: EMDB-33227, PDB-7xjh: |
化合物 | ChemComp-H6U: ChemComp-5FW: |
由来 |
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キーワード | MEMBRANE PROTEIN / GPCR |