- PDB-7xn9: Crystal structure of SSTR2 and L-054,522 complex -
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基本情報
登録情報
データベース: PDB / ID: 7xn9
タイトル
Crystal structure of SSTR2 and L-054,522 complex
要素
Somatostatin receptor type 2,Endo-1,4-beta-xylanase
キーワード
SIGNARING PROTEIN/INHIBITOR / G protein-coupled receptor (Gタンパク質共役受容体) / somatostatin receptor 2 / STRUCTURAL PROTEIN (タンパク質) / SIGNALING PROTEIN / SIGNARING PROTEIN-INHIBITOR complex
機能・相同性
機能・相同性情報
somatostatin receptor activity / 蠕動 / neuropeptide binding / cellular response to glucocorticoid stimulus / endo-1,4-beta-xylanase activity / キシラナーゼ / response to starvation / xylan catabolic process / G protein-coupled receptor signaling pathway, coupled to cyclic nucleotide second messenger / neuropeptide signaling pathway ...somatostatin receptor activity / 蠕動 / neuropeptide binding / cellular response to glucocorticoid stimulus / endo-1,4-beta-xylanase activity / キシラナーゼ / response to starvation / xylan catabolic process / G protein-coupled receptor signaling pathway, coupled to cyclic nucleotide second messenger / neuropeptide signaling pathway / forebrain development / adenylate cyclase-inhibiting G protein-coupled receptor signaling pathway / cerebellum development / Peptide ligand-binding receptors / cellular response to estradiol stimulus / PDZ domain binding / G alpha (i) signalling events / 精子形成 / neuron projection / negative regulation of cell population proliferation / 細胞膜 / 細胞質基質 類似検索 - 分子機能
Somatostatin receptor 2 / Somatostatin receptor family / Glycoside hydrolase family 11, active site 2 / Glycosyl hydrolases family 11 (GH11) active site signature 2. / Glycoside hydrolase family 11, active site 1 / Glycosyl hydrolases family 11 (GH11) active site signature 1. / Glycoside hydrolase family 11 / Glycosyl hydrolases family 11 (GH11) domain / Glycosyl hydrolases family 11 / Glycosyl hydrolases family 11 (GH11) domain profile. ...Somatostatin receptor 2 / Somatostatin receptor family / Glycoside hydrolase family 11, active site 2 / Glycosyl hydrolases family 11 (GH11) active site signature 2. / Glycoside hydrolase family 11, active site 1 / Glycosyl hydrolases family 11 (GH11) active site signature 1. / Glycoside hydrolase family 11 / Glycosyl hydrolases family 11 (GH11) domain / Glycosyl hydrolases family 11 / Glycosyl hydrolases family 11 (GH11) domain profile. / Glycoside hydrolase family 11/12 / Serpentine type 7TM GPCR chemoreceptor Srsx / G-protein coupled receptors family 1 signature. / G protein-coupled receptor, rhodopsin-like / GPCR, rhodopsin-like, 7TM / G-protein coupled receptors family 1 profile. / 7 transmembrane receptor (rhodopsin family) / Concanavalin A-like lectin/glucanase domain superfamily 類似検索 - ドメイン・相同性
ジャーナル: Cell Res / 年: 2022 タイトル: Structural insights into ligand recognition and selectivity of somatostatin receptors. 著者: Wenli Zhao / Shuo Han / Na Qiu / Wenbo Feng / Mengjie Lu / Wenru Zhang / Mu Wang / Qingtong Zhou / Shutian Chen / Wei Xu / Juan Du / Xiaojing Chu / Cuiying Yi / Antao Dai / Liaoyuan Hu / ...著者: Wenli Zhao / Shuo Han / Na Qiu / Wenbo Feng / Mengjie Lu / Wenru Zhang / Mu Wang / Qingtong Zhou / Shutian Chen / Wei Xu / Juan Du / Xiaojing Chu / Cuiying Yi / Antao Dai / Liaoyuan Hu / Michelle Y Shen / Yaping Sun / Qing Zhang / Yingli Ma / Wenge Zhong / Dehua Yang / Ming-Wei Wang / Beili Wu / Qiang Zhao / 要旨: Somatostatin receptors (SSTRs) play versatile roles in inhibiting the secretion of multiple hormones such as growth hormone and thyroid-stimulating hormone, and thus are considered as targets for ...Somatostatin receptors (SSTRs) play versatile roles in inhibiting the secretion of multiple hormones such as growth hormone and thyroid-stimulating hormone, and thus are considered as targets for treating multiple tumors. Despite great progress made in therapeutic development against this diverse receptor family, drugs that target SSTRs still show limited efficacy with preferential binding affinity and conspicuous side-effects. Here, we report five structures of SSTR2 and SSTR4 in different states, including two crystal structures of SSTR2 in complex with a selective peptide antagonist and a non-peptide agonist, respectively, a cryo-electron microscopy (cryo-EM) structure of G-bound SSTR2 in the presence of the endogenous ligand SST-14, as well as two cryo-EM structures of G-bound SSTR4 in complex with SST-14 and a small-molecule agonist J-2156, respectively. By comparison of the SSTR structures in different states, molecular mechanisms of agonism and antagonism were illustrated. Together with computational and functional analyses, the key determinants responsible for ligand recognition and selectivity of different SSTR subtypes and multiform binding modes of peptide and non-peptide ligands were identified. Insights gained in this study will help uncover ligand selectivity of various SSTRs and accelerate the development of new molecules with better efficacy by targeting SSTRs.