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データを開く
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基本情報
| 登録情報 | データベース: PDB / ID: 9cbm | ||||||
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| タイトル | Cryo-EM structure of dexmedetomidine-bound alpha-2A-adrenergic receptor in complex with heterotrimeric Gi-protein | ||||||
要素 |
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キーワード | SIGNALING PROTEIN / GPCR Adrenergic Receptor | ||||||
| 機能・相同性 | 機能・相同性情報negative regulation of uterine smooth muscle contraction / adenylate cyclase-inhibiting adrenergic receptor signaling pathway / alpha2-adrenergic receptor activity / Adrenaline signalling through Alpha-2 adrenergic receptor / alpha-2C adrenergic receptor binding / epinephrine binding / phospholipase C-activating adrenergic receptor signaling pathway / alpha-1B adrenergic receptor binding / Extra-nuclear estrogen signaling / negative regulation of norepinephrine secretion ...negative regulation of uterine smooth muscle contraction / adenylate cyclase-inhibiting adrenergic receptor signaling pathway / alpha2-adrenergic receptor activity / Adrenaline signalling through Alpha-2 adrenergic receptor / alpha-2C adrenergic receptor binding / epinephrine binding / phospholipase C-activating adrenergic receptor signaling pathway / alpha-1B adrenergic receptor binding / Extra-nuclear estrogen signaling / negative regulation of norepinephrine secretion / Adenylate cyclase inhibitory pathway / negative regulation of epinephrine secretion / Olfactory Signaling Pathway / Sensory perception of sweet, bitter, and umami (glutamate) taste / Synthesis, secretion, and inactivation of Glucagon-like Peptide-1 (GLP-1) / heterotrimeric G-protein binding / negative regulation of calcium ion-dependent exocytosis / Activation of the phototransduction cascade / Surfactant metabolism / positive regulation of potassium ion transport / dopaminergic synapse / thermoception / fear response / thioesterase binding / negative regulation of insulin secretion involved in cellular response to glucose stimulus / negative regulation of synaptic transmission / GTPase activating protein binding / Adrenaline,noradrenaline inhibits insulin secretion / positive regulation of membrane protein ectodomain proteolysis / ADP signalling through P2Y purinoceptor 12 / norepinephrine binding / Adrenoceptors / G alpha (i) signalling events / response to alcohol / intestinal absorption / 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 / G alpha (12/13) signalling events / Glucagon-type ligand receptors / 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 / positive regulation of epidermal growth factor receptor signaling pathway / Ca2+ pathway / Thrombin signalling through proteinase activated receptors (PARs) / G alpha (z) signalling events / Extra-nuclear estrogen signaling / response to morphine / G alpha (s) signalling events / G alpha (q) signalling events / positive regulation of wound healing / neurotransmitter receptor localization to postsynaptic specialization membrane / adrenergic receptor signaling pathway / G alpha (i) signalling events / Glucagon-like Peptide-1 (GLP1) regulates insulin secretion / High laminar flow shear stress activates signaling by PIEZO1 and PECAM1:CDH5:KDR in endothelial cells / Vasopressin regulates renal water homeostasis via Aquaporins / negative regulation of calcium ion transport / regulation of vasoconstriction / negative regulation of lipid catabolic process / viral release from host cell by cytolysis / cellular response to hormone stimulus / positive regulation of protein localization to cell cortex / Rho protein signal transduction / T cell migration / adenylate cyclase-activating adrenergic receptor signaling pathway / D2 dopamine receptor binding / response to prostaglandin E / presynaptic active zone membrane / adenylate cyclase regulator activity / G protein-coupled serotonin receptor binding / adenylate cyclase-inhibiting serotonin receptor signaling pathway / peptidoglycan catabolic process / axon terminus / presynaptic modulation of chemical synaptic transmission / cellular response to forskolin / regulation of mitotic spindle organization / guanyl-nucleotide exchange factor activity / positive regulation of cytokine production / positive regulation of cholesterol biosynthetic process / female pregnancy / negative regulation of insulin secretion / G protein-coupled receptor binding / adenylate cyclase-inhibiting G protein-coupled receptor signaling pathway / postsynaptic density membrane / GABA-ergic synapse / platelet activation / adenylate cyclase-modulating G protein-coupled receptor signaling pathway / G-protein beta/gamma-subunit complex binding / vasodilation / adenylate cyclase-activating G protein-coupled receptor signaling pathway 類似検索 - 分子機能 | ||||||
| 生物種 | ![]() ![]() Enterobacteria phage T4 (ファージ) 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: 3.2 Å | ||||||
データ登録者 | Lou, J.S. / Su, M. / Wang, J. / Do, H.N. / Miao, Y. / Huang, X.Y. | ||||||
| 資金援助 | 米国, 1件
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引用 | ジャーナル: Exp Mol Med / 年: 2024タイトル: Distinct binding conformations of epinephrine with α- and β-adrenergic receptors. 著者: Jian-Shu Lou / Minfei Su / Jinan Wang / Hung Nguyen Do / Yinglong Miao / Xin-Yun Huang / ![]() 要旨: Agonists targeting α-adrenergic receptors (ARs) are used to treat diverse conditions, including hypertension, attention-deficit/hyperactivity disorder, pain, panic disorders, opioid and alcohol ...Agonists targeting α-adrenergic receptors (ARs) are used to treat diverse conditions, including hypertension, attention-deficit/hyperactivity disorder, pain, panic disorders, opioid and alcohol withdrawal symptoms, and cigarette cravings. These receptors transduce signals through heterotrimeric Gi proteins. Here, we elucidated cryo-EM structures that depict α-AR in complex with Gi proteins, along with the endogenous agonist epinephrine or the synthetic agonist dexmedetomidine. Molecular dynamics simulations and functional studies reinforce the results of the structural revelations. Our investigation revealed that epinephrine exhibits different conformations when engaging with α-ARs and β-ARs. Furthermore, α-AR and β-AR (primarily coupled to Gs, with secondary associations to Gi) were compared and found to exhibit different interactions with Gi proteins. Notably, the stability of the epinephrine-α-AR-Gi complex is greater than that of the dexmedetomidine-α-AR-Gi complex. These findings substantiate and improve our knowledge on the intricate signaling mechanisms orchestrated by ARs and concurrently shed light on the regulation of α-ARs and β-ARs by epinephrine. | ||||||
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構造の表示
| 構造ビューア | 分子: Molmil Jmol/JSmol |
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ダウンロードとリンク
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ダウンロード
| PDBx/mmCIF形式 | 9cbm.cif.gz | 169.1 KB | 表示 | PDBx/mmCIF形式 |
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| PDB形式 | pdb9cbm.ent.gz | 122.5 KB | 表示 | PDB形式 |
| PDBx/mmJSON形式 | 9cbm.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 | 9cbm_validation.pdf.gz | 1.3 MB | 表示 | wwPDB検証レポート |
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| 文書・詳細版 | 9cbm_full_validation.pdf.gz | 1.4 MB | 表示 | |
| XML形式データ | 9cbm_validation.xml.gz | 36.2 KB | 表示 | |
| CIF形式データ | 9cbm_validation.cif.gz | 52.4 KB | 表示 | |
| アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/cb/9cbm ftp://data.pdbj.org/pub/pdb/validation_reports/cb/9cbm | HTTPS FTP |
-関連構造データ
| 関連構造データ | ![]() 45426MC ![]() 9cblC 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 ( |
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| 類似構造データ | 類似検索 - 機能・相同性 F&H 検索 |
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リンク
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集合体
| 登録構造単位 | ![]()
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要素
| #1: タンパク質 | 分子量: 43147.070 Da / 分子数: 1 / 変異: G203A / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() |
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| #2: タンパク質 | 分子量: 37285.734 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() 発現宿主: ![]() 参照: UniProt: P62871 |
| #3: タンパク質 | 分子量: 7845.078 Da / 分子数: 1 / 変異: C68S / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() 発現宿主: ![]() 参照: UniProt: P63212 |
| #4: タンパク質 | 分子量: 54715.871 Da / 分子数: 1 / 由来タイプ: 組換発現 由来: (組換発現) Enterobacteria phage T4 (ファージ), (組換発現) Homo sapiens (ヒト)遺伝子: E, ADRA2A, ADRA2R, ADRAR 発現宿主: ![]() 参照: UniProt: P00720, UniProt: P08913, lysozyme |
| #5: 化合物 | ChemComp-CZX / |
| 研究の焦点であるリガンドがあるか | Y |
| Has protein modification | N |
-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 |
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試料調製
| 構成要素 | 名称: Dexmedetomidine-bound alpha-2A-adrenergic receptor in complex with heterotrimeric Gi-protein タイプ: COMPLEX / Entity ID: #1-#4 / 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: ![]() |
| 緩衝液 | pH: 7 |
| 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 |
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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: TFS 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): 2000 nm / 最小 デフォーカス(公称値): 800 nm |
| 撮影 | 電子線照射量: 51 e/Å2 / フィルム・検出器のモデル: GATAN K3 (6k x 4k) |
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解析
| CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION |
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| 3次元再構成 | 解像度: 3.2 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 188480 / 対称性のタイプ: POINT |
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万見について





Enterobacteria phage T4 (ファージ)
Homo sapiens (ヒト)
米国, 1件
引用



PDBj
















FIELD EMISSION GUN