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基本情報
登録情報 | データベース: PDB / ID: 8thl | |||||||||
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タイトル | Cryo-EM structure of epinephrine-bound alpha-1A-adrenergic receptor in complex with heterotrimeric Gq-protein | |||||||||
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![]() | SIGNALING PROTEIN / Alpha-1A-adrenergic receptor / Epinephrine | |||||||||
機能・相同性 | ![]() negative regulation of heart rate involved in baroreceptor response to increased systemic arterial blood pressure / positive regulation of the force of heart contraction by epinephrine-norepinephrine / norepinephrine-epinephrine vasoconstriction involved in regulation of systemic arterial blood pressure / alpha1-adrenergic receptor activity / pilomotor reflex / negative regulation of adenylate cyclase-activating adrenergic receptor signaling pathway involved in heart process / positive regulation of heart rate by epinephrine-norepinephrine / neuron-glial cell signaling / cell growth involved in cardiac muscle cell development / positive regulation of protein kinase C signaling ...negative regulation of heart rate involved in baroreceptor response to increased systemic arterial blood pressure / positive regulation of the force of heart contraction by epinephrine-norepinephrine / norepinephrine-epinephrine vasoconstriction involved in regulation of systemic arterial blood pressure / alpha1-adrenergic receptor activity / pilomotor reflex / negative regulation of adenylate cyclase-activating adrenergic receptor signaling pathway involved in heart process / positive regulation of heart rate by epinephrine-norepinephrine / neuron-glial cell signaling / cell growth involved in cardiac muscle cell development / positive regulation of protein kinase C signaling / Fatty Acids bound to GPR40 (FFAR1) regulate insulin secretion / Acetylcholine regulates insulin secretion / positive regulation of action potential / G protein-coupled adenosine receptor signaling pathway / PLC beta mediated events / negative regulation of calcium ion-dependent exocytosis / phospholipase C-activating dopamine receptor signaling pathway / regulation of platelet activation / positive regulation of urine volume / positive regulation of smooth muscle contraction / negative regulation of adenylate cyclase activity / phototransduction, visible light / entrainment of circadian clock / positive regulation of neural precursor cell proliferation / adult heart development / glutamate receptor signaling pathway / gamma-aminobutyric acid signaling pathway / regulation of canonical Wnt signaling pathway / negative regulation of synaptic transmission / Adrenoceptors / calcium ion transport into cytosol / action potential / positive regulation of cardiac muscle hypertrophy / neuronal dense core vesicle / regulation of calcium ion transport / PKA activation in glucagon signalling / negative regulation of apoptotic signaling pathway / hair follicle placode formation / : / smooth muscle contraction / photoreceptor outer segment / mu-type opioid receptor binding / developmental growth / corticotropin-releasing hormone receptor 1 binding / intracellular transport / Adenylate cyclase inhibitory pathway / D1 dopamine receptor binding / Hedgehog 'off' state / beta-2 adrenergic receptor binding / positive regulation of insulin receptor signaling pathway / adenylate cyclase-activating adrenergic receptor signaling pathway / viral release from host cell by cytolysis / positive regulation of vasoconstriction / positive regulation of vascular associated smooth muscle cell proliferation / positive regulation of cardiac muscle contraction / activation of adenylate cyclase activity / adenylate cyclase activator activity / adenylate cyclase-inhibiting G protein-coupled receptor signaling pathway / negative regulation of autophagy / peptidoglycan catabolic process / response to nutrient / GTPase activator activity / positive regulation of superoxide anion generation / trans-Golgi network membrane / response to hormone / caveola / Regulation of insulin secretion / G protein-coupled receptor binding / positive regulation of synaptic transmission, GABAergic / insulin-like growth factor receptor binding / ionotropic glutamate receptor binding / negative regulation of protein kinase activity / G-protein beta/gamma-subunit complex binding / Olfactory Signaling Pathway / Activation of the phototransduction cascade / bone development / G beta:gamma signalling through PLC beta / Presynaptic function of Kainate receptors / Thromboxane signalling through TP receptor / G-protein activation / G protein-coupled acetylcholine receptor signaling pathway / Activation of G protein gated Potassium channels / Inhibition of voltage gated Ca2+ channels via Gbeta/gamma subunits / adenylate cyclase-activating G protein-coupled receptor signaling pathway / Prostacyclin signalling through prostacyclin receptor / Glucagon signaling in metabolic regulation / G beta:gamma signalling through CDC42 / ADP signalling through P2Y purinoceptor 12 / G beta:gamma signalling through BTK / Synthesis, secretion, and inactivation of Glucagon-like Peptide-1 (GLP-1) / cognition / Sensory perception of sweet, bitter, and umami (glutamate) taste / photoreceptor disc membrane / Adrenaline,noradrenaline inhibits insulin secretion / Glucagon-type ligand receptors / platelet aggregation / Vasopressin regulates renal water homeostasis via Aquaporins / G alpha (z) signalling events / cellular response to catecholamine stimulus / Glucagon-like Peptide-1 (GLP1) regulates insulin secretion 類似検索 - 分子機能 | |||||||||
生物種 | ![]() ![]() | |||||||||
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: 3.1 Å | |||||||||
![]() | Su, M. / Huang, X.Y. | |||||||||
資金援助 | ![]()
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![]() | ![]() タイトル: Structural basis of agonist specificity of α-adrenergic receptor. 著者: Minfei Su / Jinan Wang / Guoqing Xiang / Hung Nguyen Do / Joshua Levitz / Yinglong Miao / Xin-Yun Huang / ![]() 要旨: α-adrenergic receptors (α-ARs) play critical roles in the cardiovascular and nervous systems where they regulate blood pressure, cognition, and metabolism. However, the lack of specific agonists ...α-adrenergic receptors (α-ARs) play critical roles in the cardiovascular and nervous systems where they regulate blood pressure, cognition, and metabolism. However, the lack of specific agonists for all α subtypes has limited our understanding of the physiological roles of different α-AR subtypes, and led to the stagnancy in agonist-based drug development for these receptors. Here we report cryo-EM structures of α-AR in complex with heterotrimeric G-proteins and either the endogenous common agonist epinephrine or the α-AR-specific synthetic agonist A61603. These structures provide molecular insights into the mechanisms underlying the discrimination between α-AR and α-AR by A61603. Guided by the structures and corresponding molecular dynamics simulations, we engineer α-AR mutants that are not responsive to A61603, and α-AR mutants that can be potently activated by A61603. Together, these findings advance our understanding of the agonist specificity for α-ARs at the molecular level, opening the possibility of rational design of subtype-specific agonists. | |||||||||
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構造の表示
構造ビューア | 分子: ![]() ![]() |
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PDBx/mmCIF形式 | ![]() | 223.2 KB | 表示 | ![]() |
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PDB形式 | ![]() | 165.6 KB | 表示 | ![]() |
PDBx/mmJSON形式 | ![]() | ツリー表示 | ![]() | |
その他 | ![]() |
-検証レポート
文書・要旨 | ![]() | 1.2 MB | 表示 | ![]() |
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文書・詳細版 | ![]() | 1.2 MB | 表示 | |
XML形式データ | ![]() | 39 KB | 表示 | |
CIF形式データ | ![]() | 57.8 KB | 表示 | |
アーカイブディレクトリ | ![]() ![]() | HTTPS FTP |
-関連構造データ
関連構造データ | ![]() 41268MC ![]() 8thkC 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 ![]() |
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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
-Guanine nucleotide-binding protein ... , 3種, 3分子 ABG
#1: タンパク質 | 分子量: 28084.832 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: P04899, UniProt: P63092, UniProt: P50148 |
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#2: タンパク質 | 分子量: 39418.086 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: P62873 |
#3: 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) ![]() 発現宿主: ![]() ![]() 参照: UniProt: P59768 |
-抗体 / タンパク質 / 非ポリマー , 3種, 3分子 FR![](data/chem/img/ALE.gif)
![](data/chem/img/ALE.gif)
#4: 抗体 | 分子量: 28668.922 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() 発現宿主: ![]() ![]() |
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#5: タンパク質 | 分子量: 56485.246 Da / 分子数: 1 / 由来タイプ: 組換発現 由来: (組換発現) ![]() ![]() 遺伝子: E, ADRA1A, ADRA1C 発現宿主: ![]() ![]() 参照: UniProt: P00720, UniProt: P35348, lysozyme |
#6: 化合物 | ChemComp-ALE / |
-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 |
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試料調製
構成要素 | 名称: Epinephrine-bound alpha-1A-adrenergic receptor in complex with heterotrimeric Gq-protein タイプ: COMPLEX / Entity ID: #1-#5 / 由来: RECOMBINANT |
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分子量 | 値: 0.16 MDa / 実験値: NO |
由来(天然) | 生物種: ![]() |
由来(組換発現) | 生物種: ![]() ![]() |
緩衝液 | pH: 7 |
試料 | 濃度: 2.5 mg/ml / 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES |
急速凍結 | 装置: FEI VITROBOT MARK IV / 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: FEI TITAN KRIOS |
電子銃 | 電子線源: ![]() |
電子レンズ | モード: BRIGHT FIELD / 最大 デフォーカス(公称値): 1800 nm / 最小 デフォーカス(公称値): 1000 nm |
撮影 | 電子線照射量: 52 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: 3.1 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 219834 / 対称性のタイプ: POINT | ||||||||||||||||||||||||
拘束条件 |
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