+データを開く
-基本情報
登録情報 | データベース: PDB / ID: 7y24 | ||||||
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タイトル | Cryo-EM structure of the octreotide-bound SSTR2-miniGo-scFv16 complex | ||||||
要素 |
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キーワード | STRUCTURAL PROTEIN / GPCR / somatostatin receptor / G protein | ||||||
機能・相同性 | 機能・相同性情報 somatostatin receptor activity / peristalsis / mu-type opioid receptor binding / corticotropin-releasing hormone receptor 1 binding / vesicle docking involved in exocytosis / neuropeptide binding / cellular response to glucocorticoid stimulus / G protein-coupled dopamine receptor signaling pathway / regulation of heart contraction / response to starvation ...somatostatin receptor activity / peristalsis / mu-type opioid receptor binding / corticotropin-releasing hormone receptor 1 binding / vesicle docking involved in exocytosis / neuropeptide binding / cellular response to glucocorticoid stimulus / G protein-coupled dopamine receptor signaling pathway / regulation of heart contraction / response to starvation / G protein-coupled receptor signaling pathway, coupled to cyclic nucleotide second messenger / neuropeptide signaling pathway / negative regulation of insulin secretion / G protein-coupled serotonin receptor binding / forebrain development / muscle contraction / adenylate cyclase-inhibiting G protein-coupled receptor signaling pathway / cerebellum development / Peptide ligand-binding receptors / cellular response to estradiol stimulus / locomotory behavior / PDZ domain binding / G-protein beta/gamma-subunit complex binding / Olfactory Signaling Pathway / adenylate cyclase-modulating G protein-coupled receptor signaling pathway / Activation of the phototransduction cascade / G beta:gamma signalling through PLC beta / Presynaptic function of Kainate receptors / Thromboxane signalling through TP receptor / G protein-coupled acetylcholine receptor signaling pathway / G-protein activation / Activation of G protein gated Potassium channels / Inhibition of voltage gated Ca2+ channels via Gbeta/gamma subunits / Prostacyclin signalling through prostacyclin receptor / Glucagon signaling in metabolic regulation / G beta:gamma signalling through CDC42 / G beta:gamma signalling through BTK / ADP signalling through P2Y purinoceptor 12 / Sensory perception of sweet, bitter, and umami (glutamate) taste / Synthesis, secretion, and inactivation of Glucagon-like Peptide-1 (GLP-1) / photoreceptor disc membrane / Glucagon-type ligand receptors / Adrenaline,noradrenaline inhibits insulin secretion / Vasopressin regulates renal water homeostasis via Aquaporins / G alpha (z) signalling events / Glucagon-like Peptide-1 (GLP1) regulates insulin secretion / cellular response to catecholamine stimulus / ADORA2B mediated anti-inflammatory cytokines production / sensory perception of taste / ADP signalling through P2Y purinoceptor 1 / G beta:gamma signalling through PI3Kgamma / adenylate cyclase-activating dopamine receptor signaling pathway / Cooperation of PDCL (PhLP1) and TRiC/CCT in G-protein beta folding / GPER1 signaling / cellular response to prostaglandin E stimulus / Inactivation, recovery and regulation of the phototransduction cascade / G-protein beta-subunit binding / heterotrimeric G-protein complex / G alpha (12/13) signalling events / extracellular vesicle / signaling receptor complex adaptor activity / Thrombin signalling through proteinase activated receptors (PARs) / GTPase binding / retina development in camera-type eye / Ca2+ pathway / phospholipase C-activating G protein-coupled receptor signaling pathway / cell body / G alpha (i) signalling events / fibroblast proliferation / spermatogenesis / G alpha (s) signalling events / 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 / G alpha (q) signalling events / Ras protein signal transduction / cell population proliferation / Extra-nuclear estrogen signaling / neuron projection / G protein-coupled receptor signaling pathway / negative regulation of cell population proliferation / lysosomal membrane / GTPase activity / dendrite / synapse / protein-containing complex binding / GTP binding / signal transduction / extracellular exosome / membrane / metal ion binding / plasma membrane / cytosol / cytoplasm 類似検索 - 分子機能 | ||||||
生物種 | Homo sapiens (ヒト) | ||||||
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: 3.25 Å | ||||||
データ登録者 | Chen, S. / Zheng, S. | ||||||
資金援助 | 中国, 1件
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引用 | ジャーナル: Nat Chem Biol / 年: 2023 タイトル: Molecular basis for the selective G protein signaling of somatostatin receptors. 著者: Sijia Chen / Xiao Teng / Sanduo Zheng / 要旨: G protein-coupled receptors (GPCRs) modulate every aspect of physiological functions mainly through activating heterotrimeric G proteins. A majority of GPCRs promiscuously couple to multiple G ...G protein-coupled receptors (GPCRs) modulate every aspect of physiological functions mainly through activating heterotrimeric G proteins. A majority of GPCRs promiscuously couple to multiple G protein subtypes. Here we validate that in addition to the well-known G pathway, somatostatin receptor 2 and 5 (SSTR2 and SSTR5) couple to the G pathway and show that smaller ligands preferentially activate the G pathway. We further determined cryo-electron microscopy structures of the SSTR2‒G and SSTR2‒G complexes bound to octreotide and SST-14. Structural and functional analysis revealed that G protein selectivity of SSTRs is not only determined by structural elements in the receptor-G protein interface, but also by the conformation of the agonist-binding pocket. Accordingly, smaller ligands fail to stabilize a broader agonist-binding pocket of SSTRs that is required for efficient G coupling but not G coupling. Our studies facilitate the design of drugs with selective G protein signaling to improve therapeutic efficacy. | ||||||
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 | 7y24.cif.gz | 199.1 KB | 表示 | PDBx/mmCIF形式 |
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PDB形式 | pdb7y24.ent.gz | 154.4 KB | 表示 | PDB形式 |
PDBx/mmJSON形式 | 7y24.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 | 7y24_validation.pdf.gz | 1 MB | 表示 | wwPDB検証レポート |
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文書・詳細版 | 7y24_full_validation.pdf.gz | 1 MB | 表示 | |
XML形式データ | 7y24_validation.xml.gz | 39.7 KB | 表示 | |
CIF形式データ | 7y24_validation.cif.gz | 59 KB | 表示 | |
アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/y2/7y24 ftp://data.pdbj.org/pub/pdb/validation_reports/y2/7y24 | HTTPS FTP |
-関連構造データ
関連構造データ | 33585MC 7y26C 7y27C 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 ABG
#1: タンパク質 | 分子量: 25056.553 Da / 分子数: 1 断片: UNP residues 5-57, UNP residues 182-231, UNP residues 242-354 変異: G42N,E43N,A227D,G230D,L250D,I332A,V335I / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: GNAO1 / 細胞株 (発現宿主): HEK293 / 発現宿主: Homo sapiens (ヒト) / 参照: UniProt: P09471 |
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#2: タンパク質 | 分子量: 37198.656 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: GNB1 発現宿主: Spodoptera frugiperda (ツマジロクサヨトウ) 参照: UniProt: P62873 |
#3: タンパク質 | 分子量: 6160.126 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: GNG2 発現宿主: Spodoptera frugiperda (ツマジロクサヨトウ) 参照: UniProt: P59768 |
-抗体 / タンパク質・ペプチド / タンパク質 , 3種, 3分子 SCE
#4: 抗体 | 分子量: 26222.219 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 細胞株 (発現宿主): HEK293 / 発現宿主: Homo sapiens (ヒト) |
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#5: タンパク質・ペプチド | 分子量: 1036.246 Da / 分子数: 1 / 由来タイプ: 合成 / 由来: (合成) Homo sapiens (ヒト) |
#6: タンパク質 | 分子量: 36740.621 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: SSTR2 / 細胞株 (発現宿主): HEK293 / 発現宿主: Homo sapiens (ヒト) / 参照: UniProt: P30874 |
-詳細
研究の焦点であるリガンドがあるか | Y |
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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 |
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由来(天然) |
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由来(組換発現) |
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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 | ||||||||||||||||||||||||||||||||||||
試料支持 | グリッドの材料: GOLD / グリッドのタイプ: Quantifoil R1.2/1.3 | ||||||||||||||||||||||||||||||||||||
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: FLOOD BEAM |
電子レンズ | モード: BRIGHT FIELD / 最大 デフォーカス(公称値): 5000 nm / 最小 デフォーカス(公称値): 1000 nm |
撮影 | 電子線照射量: 50 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 | 名称: PHENIX / バージョン: 1.19_4092: / 分類: 精密化 | ||||||||||||||||||||||||
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CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||
3次元再構成 | 解像度: 3.25 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 687989 / 対称性のタイプ: POINT | ||||||||||||||||||||||||
拘束条件 |
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