+データを開く
-基本情報
登録情報 | データベース: PDB / ID: 7xau | ||||||
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タイトル | Structure of somatostatin receptor 2 bound with octreotide. | ||||||
要素 |
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キーワード | MEMBRANE PROTEIN / G protein coupled receptor / Cryo-EM / SST analogues / Polypeptide drugs | ||||||
機能・相同性 | 機能・相同性情報 somatostatin receptor activity / Olfactory Signaling Pathway / Sensory perception of sweet, bitter, and umami (glutamate) taste / Synthesis, secretion, and inactivation of Glucagon-like Peptide-1 (GLP-1) / peristalsis / Activation of the phototransduction cascade / neuropeptide binding / cellular response to glucocorticoid stimulus / Activation of G protein gated Potassium channels / G-protein activation ...somatostatin receptor activity / Olfactory Signaling Pathway / Sensory perception of sweet, bitter, and umami (glutamate) taste / Synthesis, secretion, and inactivation of Glucagon-like Peptide-1 (GLP-1) / peristalsis / Activation of the phototransduction cascade / neuropeptide binding / cellular response to glucocorticoid stimulus / Activation of G protein gated Potassium channels / G-protein activation / G beta:gamma signalling through PI3Kgamma / Prostacyclin signalling through prostacyclin receptor / G beta:gamma signalling through PLC beta / ADP signalling through P2Y purinoceptor 1 / Thromboxane signalling through TP receptor / Presynaptic function of Kainate receptors / G beta:gamma signalling through CDC42 / Inhibition of voltage gated Ca2+ channels via Gbeta/gamma subunits / Glucagon-type ligand receptors / G alpha (12/13) signalling events / G beta:gamma signalling through BTK / ADP signalling through P2Y purinoceptor 12 / Adrenaline,noradrenaline inhibits insulin secretion / Cooperation of PDCL (PhLP1) and TRiC/CCT in G-protein beta folding / Thrombin signalling through proteinase activated receptors (PARs) / Ca2+ pathway / Extra-nuclear estrogen signaling / G alpha (z) signalling events / G alpha (s) signalling events / G alpha (q) signalling events / G alpha (i) signalling events / Glucagon-like Peptide-1 (GLP1) regulates insulin secretion / Vasopressin regulates renal water homeostasis via Aquaporins / response to starvation / G protein-coupled receptor signaling pathway, coupled to cyclic nucleotide second messenger / neuropeptide signaling pathway / T cell migration / D2 dopamine receptor binding / Adenylate cyclase inhibitory pathway / positive regulation of protein localization to cell cortex / regulation of cAMP-mediated signaling / G protein-coupled serotonin receptor binding / cellular response to forskolin / forebrain development / regulation of mitotic spindle organization / adenylate cyclase-inhibiting G protein-coupled receptor signaling pathway / cerebellum development / Peptide ligand-binding receptors / cellular response to estradiol stimulus / Regulation of insulin secretion / G protein-coupled receptor binding / PDZ domain binding / G-protein beta/gamma-subunit complex binding / adenylate cyclase-modulating G protein-coupled receptor signaling pathway / response to peptide hormone / ADP signalling through P2Y purinoceptor 12 / photoreceptor disc membrane / Adrenaline,noradrenaline inhibits insulin secretion / G alpha (z) signalling events / ADORA2B mediated anti-inflammatory cytokines production / cellular response to catecholamine stimulus / adenylate cyclase-activating dopamine receptor signaling pathway / GPER1 signaling / GDP binding / cellular response to prostaglandin E stimulus / G-protein beta-subunit binding / heterotrimeric G-protein complex / signaling receptor complex adaptor activity / cell cortex / midbody / G alpha (i) signalling events / G alpha (s) signalling events / spermatogenesis / 加水分解酵素; 酸無水物に作用; GTPに作用・細胞または細胞小器官の運動に関与 / Extra-nuclear estrogen signaling / neuron projection / G protein-coupled receptor signaling pathway / negative regulation of cell population proliferation / lysosomal membrane / cell division / GTPase activity / centrosome / GTP binding / nucleolus / magnesium ion binding / extracellular exosome / nucleoplasm / membrane / plasma membrane / cytosol / cytoplasm 類似検索 - 分子機能 | ||||||
生物種 | Homo sapiens (ヒト) synthetic construct (人工物) Bos taurus (ウシ) Rattus (ネズミ) | ||||||
手法 | 電子顕微鏡法 / 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度: 2.97 Å | ||||||
データ登録者 | Bo, Q. / Yang, F. / Li, Y.G. / Meng, X.Y. / Zhang, H.H. / Zhou, Y.X. / Ling, S.L. / Sun, D.M. / Lv, P. / Liu, L. ...Bo, Q. / Yang, F. / Li, Y.G. / Meng, X.Y. / Zhang, H.H. / Zhou, Y.X. / Ling, S.L. / Sun, D.M. / Lv, P. / Liu, L. / Shi, P. / Tian, C.L. | ||||||
資金援助 | 中国, 1件
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引用 | ジャーナル: Cell Discov / 年: 2022 タイトル: Structural insights into the activation of somatostatin receptor 2 by cyclic SST analogues. 著者: Qing Bo / Fan Yang / Yingge Li / Xianyu Meng / Huanhuan Zhang / Yingxin Zhou / Shenglong Ling / Demeng Sun / Pei Lv / Lei Liu / Pan Shi / Changlin Tian / 要旨: The endogenous cyclic tetradecapeptide SST14 was reported to stimulate all five somatostatin receptors (SSTR1-5) for hormone release, neurotransmission, cell growth arrest and cancer suppression. Two ...The endogenous cyclic tetradecapeptide SST14 was reported to stimulate all five somatostatin receptors (SSTR1-5) for hormone release, neurotransmission, cell growth arrest and cancer suppression. Two SST14-derived short cyclic SST analogues (lanreotide or octreotide) with improved stability and longer lifetime were developed as drugs to preferentially activate SSTR2 and treat acromegalia and neuroendocrine tumors. Here, cryo-EM structures of the human SSTR2-Gi complex bound with SST14, octreotide or lanreotide were determined at resolutions of 2.85 Å, 2.97 Å, and 2.87 Å, respectively. Structural and functional analysis revealed that interactions between β-turn residues in SST analogues and transmembrane SSTR2 residues in the ligand-binding pocket are crucial for receptor binding and functional stimulation of the two SST14-derived cyclic octapeptides. Additionally, Q102, N276, and F294 could be responsible for the selectivity of lanreotide or octreotide for SSTR2 over SSTR1 or SSTR4. These results provide valuable insights into further rational development of SST analogue drugs targeting SSTR2. | ||||||
履歴 |
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-構造の表示
構造ビューア | 分子: MolmilJmol/JSmol |
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-ダウンロードとリンク
-ダウンロード
PDBx/mmCIF形式 | 7xau.cif.gz | 218.2 KB | 表示 | PDBx/mmCIF形式 |
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PDB形式 | pdb7xau.ent.gz | 161.6 KB | 表示 | PDB形式 |
PDBx/mmJSON形式 | 7xau.json.gz | ツリー表示 | PDBx/mmJSON形式 | |
その他 | その他のダウンロード |
-検証レポート
文書・要旨 | 7xau_validation.pdf.gz | 1019.7 KB | 表示 | wwPDB検証レポート |
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文書・詳細版 | 7xau_full_validation.pdf.gz | 1 MB | 表示 | |
XML形式データ | 7xau_validation.xml.gz | 39.7 KB | 表示 | |
CIF形式データ | 7xau_validation.cif.gz | 59.8 KB | 表示 | |
アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/xa/7xau ftp://data.pdbj.org/pub/pdb/validation_reports/xa/7xau | HTTPS FTP |
-関連構造データ
関連構造データ | 33099MC 7xatC 7xavC M: このデータのモデリングに利用したマップデータ C: 同じ文献を引用 (文献) |
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類似構造データ | 類似検索 - 機能・相同性F&H 検索 |
-リンク
-集合体
登録構造単位 |
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1 |
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-要素
-Guanine nucleotide-binding protein ... , 3種, 3分子 BCD
#2: タンパク質 | 分子量: 40472.082 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: GNAI1 発現宿主: Spodoptera frugiperda (ツマジロクサヨトウ) 参照: UniProt: P63096 |
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#3: タンパク質 | 分子量: 38975.578 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) Bos taurus (ウシ) / 遺伝子: GNB1 発現宿主: Spodoptera frugiperda (ツマジロクサヨトウ) 参照: UniProt: P62871 |
#4: タンパク質 | 分子量: 7861.143 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) Bos taurus (ウシ) / 遺伝子: GNG2 発現宿主: Spodoptera frugiperda (ツマジロクサヨトウ) 参照: UniProt: P63212 |
-タンパク質 / 抗体 / タンパク質・ペプチド , 3種, 3分子 AEF
#1: タンパク質 | 分子量: 63274.395 Da / 分子数: 1 / 由来タイプ: 組換発現 由来: (組換発現) Homo sapiens (ヒト), (組換発現) synthetic construct (人工物) 遺伝子: SSTR2 発現宿主: Spodoptera frugiperda (ツマジロクサヨトウ) 参照: UniProt: P30874 |
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#5: 抗体 | 分子量: 32768.484 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) Rattus (ネズミ) 発現宿主: Spodoptera frugiperda (ツマジロクサヨトウ) |
#6: タンパク質・ペプチド | 分子量: 1022.263 Da / 分子数: 1 / 由来タイプ: 合成 / 由来: (合成) synthetic construct (人工物) |
-詳細
研究の焦点であるリガンドがあるか | N |
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-実験情報
-実験
実験 | 手法: 電子顕微鏡法 |
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EM実験 | 試料の集合状態: PARTICLE / 3次元再構成法: 単粒子再構成法 |
-試料調製
構成要素 | 名称: The SST anologue octreotide bound somatostatin receptor 2 and Gi heterotrimer complex タイプ: COMPLEX / Entity ID: all / 由来: MULTIPLE SOURCES |
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由来(天然) | 生物種: Homo sapiens (ヒト) |
由来(組換発現) | 生物種: Spodoptera frugiperda (ツマジロクサヨトウ) |
緩衝液 | pH: 7.5 |
試料 | 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES |
急速凍結 | 凍結剤: ETHANE |
-電子顕微鏡撮影
実験機器 | モデル: Titan Krios / 画像提供: FEI Company |
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顕微鏡 | モデル: FEI TITAN KRIOS |
電子銃 | 電子線源: FIELD EMISSION GUN / 加速電圧: 300 kV / 照射モード: SPOT SCAN |
電子レンズ | モード: DIFFRACTION / 最大 デフォーカス(公称値): 2200 nm / 最小 デフォーカス(公称値): 1200 nm |
撮影 | 電子線照射量: 55 e/Å2 / フィルム・検出器のモデル: GATAN K3 (6k x 4k) |
-解析
ソフトウェア |
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CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||
3次元再構成 | 解像度: 2.97 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 666575 / 対称性のタイプ: POINT | ||||||||||||||||||||||||
精密化 | 立体化学のターゲット値: CDL v1.2 | ||||||||||||||||||||||||
拘束条件 |
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