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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: 7ryc | ||||||
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タイトル | Oxytocin receptor (OTR) bound to oxytocin in complex with a heterotrimeric Gq protein | ||||||
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![]() | MEMBRANE PROTEIN/NEUROPEPTIDE / HORMONE / GPCR COMPLEX / TRANSMEMBRANE RECEPTOR / OXYTOCIN RECEPTOR / OTR / OT / OXTR / G PROTEIN / OXYTOCIN / VASOTOCIN / MEMBRANE PROTEIN / MEMBRANE PROTEIN-NEUROPEPTIDE complex | ||||||
機能・相同性 | ![]() oxytocin receptor activity / positive regulation of hindgut contraction / maternal aggressive behavior / response to anoxia / oxytocin receptor binding / neurohypophyseal hormone activity / V1A vasopressin receptor binding / sperm ejaculation / positive regulation of penile erection / positive regulation of uterine smooth muscle contraction ...oxytocin receptor activity / positive regulation of hindgut contraction / maternal aggressive behavior / response to anoxia / oxytocin receptor binding / neurohypophyseal hormone activity / V1A vasopressin receptor binding / sperm ejaculation / positive regulation of penile erection / positive regulation of uterine smooth muscle contraction / Vasopressin-like receptors / regulation of systemic arterial blood pressure by vasopressin / vasopressin receptor activity / maternal process involved in parturition / positive regulation of norepinephrine secretion / negative regulation of urine volume / drinking behavior / response to sucrose / telencephalon development / response to ether / positive regulation of prostaglandin secretion / grooming behavior / positive regulation of blood pressure / neuropeptide hormone activity / maternal behavior / positive regulation of ossification / positive regulation of female receptivity / digestive tract development / positive regulation of synapse assembly / eating behavior / response to food / male mating behavior / suckling behavior / neuronal dense core vesicle / microvillus / peptide hormone binding / social behavior / response to electrical stimulus / positive regulation of synaptic transmission / response to glucocorticoid / response to retinoic acid / estrous cycle / positive regulation of vasoconstriction / response to cAMP / cellular response to hormone stimulus / response to prostaglandin E / lactation / negative regulation of blood pressure / ERK1 and ERK2 cascade / response to cytokine / ionotropic glutamate receptor binding / response to amphetamine / muscle contraction / positive regulation of synaptic transmission, glutamatergic / regulation of heart rate / secretory granule / female pregnancy / response to progesterone / response to activity / positive regulation of synaptic transmission, GABAergic / adherens junction / response to cocaine / response to peptide hormone / Olfactory Signaling Pathway / Activation of the phototransduction cascade / G beta:gamma signalling through PLC beta / Presynaptic function of Kainate receptors / Thromboxane signalling through TP receptor / terminal bouton / G protein-coupled acetylcholine receptor signaling pathway / memory / 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 / G beta:gamma signalling through CDC42 / Glucagon signaling in metabolic regulation / G beta:gamma signalling through BTK / Synthesis, secretion, and inactivation of Glucagon-like Peptide-1 (GLP-1) / ADP signalling through P2Y purinoceptor 12 / Sensory perception of sweet, bitter, and umami (glutamate) taste / 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 / ADP signalling through P2Y purinoceptor 1 / ADORA2B mediated anti-inflammatory cytokines production / G beta:gamma signalling through PI3Kgamma / Cooperation of PDCL (PhLP1) and TRiC/CCT in G-protein beta folding / adenylate cyclase-activating dopamine receptor signaling pathway / GPER1 signaling / Inactivation, recovery and regulation of the phototransduction cascade / cellular response to prostaglandin E stimulus / heterotrimeric G-protein complex / G alpha (12/13) signalling events / sensory perception of taste / extracellular vesicle 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: 2.9 Å | ||||||
![]() | Meyerowitz, J.G. / Robertson, M.J. / Skiniotis, G. | ||||||
資金援助 | ![]()
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![]() | ![]() タイトル: The oxytocin signaling complex reveals a molecular switch for cation dependence. 著者: Justin G Meyerowitz / Michael J Robertson / Ximena Barros-Álvarez / Ouliana Panova / Robert M Nwokonko / Yang Gao / Georgios Skiniotis / ![]() 要旨: Oxytocin (OT) and vasopressin (AVP) are conserved peptide signaling hormones that are critical for diverse processes including osmotic homeostasis, reproduction, lactation and social interaction. OT ...Oxytocin (OT) and vasopressin (AVP) are conserved peptide signaling hormones that are critical for diverse processes including osmotic homeostasis, reproduction, lactation and social interaction. OT acts through the oxytocin receptor (OTR), a magnesium-dependent G protein-coupled receptor that is a therapeutic target for treatment of postpartum hemorrhage, dysfunctional labor and autism. However, the molecular mechanisms that underlie OTR activation by OT and the dependence on magnesium remain unknown. Here we present the wild-type active-state structure of human OTR bound to OT and miniG determined by cryo-EM. The structure reveals a unique activation mechanism adopted by OTR involving both the formation of a Mg coordination complex between OT and the receptor, and disruption of transmembrane helix 7 (TM7) by OT. Our functional assays demonstrate the role of TM7 disruption and provide the mechanism of full agonism by OT and partial agonism by OT analogs. Furthermore, we find that the identity of a single cation-coordinating residue across vasopressin family receptors determines whether the receptor is cation-dependent. Collectively, these results demonstrate how the Mg-dependent OTR is activated by OT, provide essential information for structure-based drug discovery efforts and shed light on the molecular determinants of cation dependence of vasopressin family receptors throughout the animal kingdom. | ||||||
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構造の表示
ムービー |
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構造ビューア | 分子: ![]() ![]() |
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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 | ![]() | 212.3 KB | 表示 | ![]() |
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PDB形式 | ![]() | 157.2 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 | ![]() | 690.3 KB | 表示 | ![]() |
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文書・詳細版 | ![]() | 696.8 KB | 表示 | |
XML形式データ | ![]() | 33.7 KB | 表示 | |
CIF形式データ | ![]() | 52.6 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 | ![]() 24733MC 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 | |
電子顕微鏡画像生データ | ![]() Data size: 4.1 TB Data #1: Unaligned multi-frame micrographs of the oxytocin-oxytocin receptor-miniGq complex [micrographs - multiframe]) |
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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 ... , 2種, 2分子 DC
#3: タンパク質 | 分子量: 36573.531 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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#4: タンパク質 | 分子量: 37728.152 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 |
-タンパク質・ペプチド / タンパク質 / 抗体 / 非ポリマー , 4種, 4分子 LOE

#1: タンパク質・ペプチド | 分子量: 1008.196 Da / 分子数: 1 / 由来タイプ: 合成 / 詳細: C-C cyclized nonapeptide / 由来: (合成) ![]() |
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#2: タンパク質 | 分子量: 49627.074 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() |
#5: 抗体 | 分子量: 27720.795 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() 発現宿主: ![]() ![]() |
#6: 化合物 | ChemComp-MG / |
-詳細
研究の焦点であるリガンドがあるか | Y |
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Has protein modification | Y |
-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 |
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分子量 | 実験値: NO | ||||||||||||||||||||||||||||||||||||
由来(天然) |
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由来(組換発現) |
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緩衝液 | pH: 7.4 | ||||||||||||||||||||||||||||||||||||
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: UltrAuFoil R1.2/1.3 | ||||||||||||||||||||||||||||||||||||
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: ![]() |
電子レンズ | モード: BRIGHT FIELD / 最大 デフォーカス(公称値): -1.8 nm / 最小 デフォーカス(公称値): -0.8 nm / Cs: 2.7 mm / C2レンズ絞り径: 70 µm |
試料ホルダ | 凍結剤: NITROGEN 試料ホルダーモデル: FEI TITAN KRIOS AUTOGRID HOLDER |
撮影 | 平均露光時間: 2.497 sec. / 電子線照射量: 54.8 e/Å2 / フィルム・検出器のモデル: GATAN K3 (6k x 4k) / 撮影したグリッド数: 1 / 実像数: 40 |
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解析
ソフトウェア | 名称: PHENIX / バージョン: 1.18.2_3874: / 分類: 精密化 | ||||||||||||||||||||||||
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EM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: 2.9 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 423703 / アルゴリズム: FOURIER SPACE / 対称性のタイプ: POINT | ||||||||||||||||||||||||
原子モデル構築 | B value: 69.03 / 空間: REAL | ||||||||||||||||||||||||
拘束条件 |
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