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基本情報
登録情報 | データベース: PDB / ID: 9d0a | ||||||||||||||||||||||||
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タイトル | CryoEM structure of PAR2 with endogenous tethered ligand. | ||||||||||||||||||||||||
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![]() | IMMUNE SYSTEM / PAR2 / endogenous ligand | ||||||||||||||||||||||||
機能・相同性 | ![]() positive regulation of neutrophil mediated killing of gram-negative bacterium / : / positive regulation of renin secretion into blood stream / positive regulation of eosinophil degranulation / mature conventional dendritic cell differentiation / leukocyte proliferation / positive regulation of glomerular filtration / regulation of chemokine (C-X-C motif) ligand 2 production / negative regulation of toll-like receptor 3 signaling pathway / positive regulation of toll-like receptor 3 signaling pathway ...positive regulation of neutrophil mediated killing of gram-negative bacterium / : / positive regulation of renin secretion into blood stream / positive regulation of eosinophil degranulation / mature conventional dendritic cell differentiation / leukocyte proliferation / positive regulation of glomerular filtration / regulation of chemokine (C-X-C motif) ligand 2 production / negative regulation of toll-like receptor 3 signaling pathway / positive regulation of toll-like receptor 3 signaling pathway / thrombin-activated receptor activity / positive regulation of actin filament depolymerization / positive regulation of toll-like receptor 2 signaling pathway / cell-cell junction maintenance / Fatty Acids bound to GPR40 (FFAR1) regulate insulin secretion / Acetylcholine regulates insulin secretion / phospholipase C-activating G protein-coupled glutamate receptor signaling pathway / positive regulation of toll-like receptor 4 signaling pathway / positive regulation of pseudopodium assembly / T cell activation involved in immune response / PLC beta mediated events / phospholipase C-activating serotonin receptor signaling pathway / positive regulation of cytokine production involved in immune response / entrainment of circadian clock / regulation of platelet activation / positive regulation of phagocytosis, engulfment / negative regulation of chemokine production / positive regulation of chemotaxis / neutrophil activation / positive regulation of leukocyte chemotaxis / establishment of endothelial barrier / regulation of JNK cascade / regulation of canonical NF-kappaB signal transduction / positive regulation of positive chemotaxis / regulation of canonical Wnt signaling pathway / negative regulation of JNK cascade / glutamate receptor signaling pathway / leukocyte migration / positive regulation of Rho protein signal transduction / regulation of blood coagulation / pseudopodium / positive regulation of interleukin-10 production / PKA activation in glucagon signalling / phototransduction, visible light / developmental growth / hair follicle placode formation / photoreceptor outer segment / negative regulation of tumor necrosis factor-mediated signaling pathway / postsynaptic cytosol / neuropeptide signaling pathway / G-protein alpha-subunit binding / D1 dopamine receptor binding / intracellular transport / vascular endothelial cell response to laminar fluid shear stress / renal water homeostasis / Hedgehog 'off' state / activation of adenylate cyclase activity / adenylate cyclase-activating adrenergic receptor signaling pathway / positive regulation of chemokine production / negative regulation of protein kinase activity / response to prostaglandin E / enzyme regulator activity / positive regulation of GTPase activity / regulation of insulin secretion / cellular response to glucagon stimulus / GTPase activator activity / adenylate cyclase activator activity / Peptide ligand-binding receptors / positive regulation of superoxide anion generation / Turbulent (oscillatory, disturbed) flow shear stress activates signaling by PIEZO1 and integrins in endothelial cells / positive regulation of interleukin-1 beta production / trans-Golgi network membrane / positive regulation of interleukin-8 production / positive regulation of JNK cascade / negative regulation of inflammatory response to antigenic stimulus / G protein-coupled receptor binding / negative regulation of insulin secretion / G protein-coupled receptor activity / bone development / positive regulation of interleukin-6 production / G-protein beta/gamma-subunit complex binding / platelet aggregation / Olfactory Signaling Pathway / Activation of the phototransduction cascade / cognition / G beta:gamma signalling through PLC beta / Presynaptic function of Kainate receptors / Thromboxane signalling through TP receptor / G protein-coupled acetylcholine receptor signaling pathway / positive regulation of type II interferon production / G-protein activation / 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 / 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 類似検索 - 分子機能 | ||||||||||||||||||||||||
生物種 | ![]() unidentified (未定義) | ||||||||||||||||||||||||
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 | ||||||||||||||||||||||||
![]() | Lyu, Z. / Lyu, X. / McGrath, A.P. / Kang, Y. | ||||||||||||||||||||||||
資金援助 | 1件
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![]() | ![]() タイトル: Structural basis for the activation of proteinase-activated receptors PAR1 and PAR2. 著者: Zongyang Lyu / Xiaoxuan Lyu / Andrey G Malyutin / Guliang Xia / Daniel Carney / Vinicius M Alves / Matthew Falk / Nidhi Arora / Hua Zou / Aaron P McGrath / Yanyong Kang / ![]() 要旨: Members of the proteinase-activated receptor (PAR) subfamily of G protein-coupled receptors (GPCRs) play critical roles in processes like hemostasis, thrombosis, development, wound healing, ...Members of the proteinase-activated receptor (PAR) subfamily of G protein-coupled receptors (GPCRs) play critical roles in processes like hemostasis, thrombosis, development, wound healing, inflammation, and cancer progression. Comprising PAR1-PAR4, these receptors are specifically activated by protease cleavage at their extracellular amino terminus, revealing a 'tethered ligand' that self-activates the receptor. This triggers complex intracellular signaling via G proteins and beta-arrestins, linking external protease signals to cellular functions. To date, direct structural visualization of these ligand-receptor complexes has been limited. Here, we present structural snapshots of activated PAR1 and PAR2 bound to their endogenous tethered ligands, revealing a shallow and constricted orthosteric binding pocket. Comparisons with antagonist-bound structures show minimal conformational changes in the TM6 helix and larger movements of TM7 upon activation. These findings reveal a common activation mechanism for PAR1 and PAR2, highlighting critical residues involved in ligand recognition. Additionally, the structure of PAR2 bound to a pathway selective antagonist, GB88, demonstrates how potent orthosteric engagement can be achieved by a small molecule mimicking the endogenous tethered ligand's interactions. | ||||||||||||||||||||||||
履歴 |
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構造の表示
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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PDBx/mmCIF形式 | ![]() | 229.9 KB | 表示 | ![]() |
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PDB形式 | ![]() | 174.8 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 MB | 表示 | ![]() |
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文書・詳細版 | ![]() | 1 MB | 表示 | |
XML形式データ | ![]() | 44.4 KB | 表示 | |
CIF形式データ | ![]() | 66.6 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 | ![]() 46448MC ![]() 9d4zC ![]() 9e7rC 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
#1: 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: P62873 |
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#2: タンパク質 | 分子量: 6504.446 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 |
#3: 抗体 | 分子量: 26679.721 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) unidentified (未定義) 発現宿主: ![]() ![]() |
#4: タンパク質 | 分子量: 44173.203 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: P55085 |
#5: タンパク質 | 分子量: 41972.578 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: P50148, UniProt: P63092 |
研究の焦点であるリガンドがあるか | N |
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 | 名称: Complex of PAR2 with G proteins / タイプ: COMPLEX / Entity ID: all / 由来: MULTIPLE SOURCES |
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分子量 | 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 | 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 / グリッドのサイズ: 300 divisions/in. / グリッドのタイプ: Quantifoil |
急速凍結 | 凍結剤: ETHANE |
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電子顕微鏡撮影
顕微鏡 | モデル: TFS GLACIOS |
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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): 2000 nm / 最小 デフォーカス(公称値): 800 nm |
撮影 | 電子線照射量: 45 e/Å2 フィルム・検出器のモデル: TFS FALCON 4i (4k x 4k) |
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解析
EMソフトウェア | 名称: PHENIX / カテゴリ: モデル精密化 | ||||||||||||||||||||||||
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CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||
3次元再構成 | 解像度: 3.1 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 404635 / 対称性のタイプ: POINT | ||||||||||||||||||||||||
精密化 | 最高解像度: 3.1 Å 立体化学のターゲット値: REAL-SPACE (WEIGHTED MAP SUM AT ATOM CENTERS) | ||||||||||||||||||||||||
拘束条件 |
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