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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: 8xos | |||||||||||||||||||||||||||||||||||||||||||||
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| タイトル | Cryo-EM structure of the tethered agonist-bound human PAR1-Gi complex | |||||||||||||||||||||||||||||||||||||||||||||
要素 |
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キーワード | MEMBRANE PROTEIN / GPCR / protease-activated receptor | |||||||||||||||||||||||||||||||||||||||||||||
| 機能・相同性 | 機能・相同性情報negative regulation of renin secretion into blood stream / dendritic cell homeostasis / trans-synaptic signaling by endocannabinoid, modulating synaptic transmission / platelet dense tubular network / establishment of synaptic specificity at neuromuscular junction / thrombin-activated receptor activity / regulation of interleukin-1 beta production / platelet dense granule organization / connective tissue replacement involved in inflammatory response wound healing / cell-cell junction maintenance ...negative regulation of renin secretion into blood stream / dendritic cell homeostasis / trans-synaptic signaling by endocannabinoid, modulating synaptic transmission / platelet dense tubular network / establishment of synaptic specificity at neuromuscular junction / thrombin-activated receptor activity / regulation of interleukin-1 beta production / platelet dense granule organization / connective tissue replacement involved in inflammatory response wound healing / cell-cell junction maintenance / positive regulation of smooth muscle contraction / positive regulation of calcium ion transport / G-protein activation / Activation of the phototransduction cascade / Glucagon-type ligand receptors / Thromboxane signalling through TP receptor / Sensory perception of sweet, bitter, and umami (glutamate) taste / G beta:gamma signalling through PI3Kgamma / G beta:gamma signalling through CDC42 / Cooperation of PDCL (PhLP1) and TRiC/CCT in G-protein beta folding / Activation of G protein gated Potassium channels / Inhibition of voltage gated Ca2+ channels via Gbeta/gamma subunits / Ca2+ pathway / G alpha (z) signalling events / High laminar flow shear stress activates signaling by PIEZO1 and PECAM1:CDH5:KDR in endothelial cells / Glucagon-like Peptide-1 (GLP1) regulates insulin secretion / Vasopressin regulates renal water homeostasis via Aquaporins / Adrenaline,noradrenaline inhibits insulin secretion / ADP signalling through P2Y purinoceptor 12 / G alpha (q) signalling events / G alpha (i) signalling events / Thrombin signalling through proteinase activated receptors (PARs) / 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 / Ca2+ pathway / Thrombin signalling through proteinase activated receptors (PARs) / G alpha (z) signalling events / Extra-nuclear estrogen signaling / photoreceptor outer segment membrane / G alpha (s) signalling events / G alpha (q) signalling events / spectrin binding / G alpha (i) signalling events / negative regulation of glomerular filtration / thrombin-activated receptor signaling pathway / Glucagon-like Peptide-1 (GLP1) regulates insulin secretion / positive regulation of Rho protein signal transduction / High laminar flow shear stress activates signaling by PIEZO1 and PECAM1:CDH5:KDR in endothelial cells / Vasopressin regulates renal water homeostasis via Aquaporins / regulation of blood coagulation / positive regulation of vasoconstriction / alkylglycerophosphoethanolamine phosphodiesterase activity / positive regulation of collagen biosynthetic process / anatomical structure morphogenesis / positive regulation of blood coagulation / G-protein alpha-subunit binding / photoreceptor outer segment / Common Pathway of Fibrin Clot Formation / adenylate cyclase inhibitor activity / positive regulation of protein localization to cell cortex / T cell migration / Adenylate cyclase inhibitory pathway / D2 dopamine receptor binding / response to prostaglandin E / adenylate cyclase regulator activity / G protein-coupled serotonin receptor binding / release of sequestered calcium ion into cytosol / adenylate cyclase-inhibiting serotonin receptor signaling pathway / cardiac muscle cell apoptotic process / photoreceptor inner segment / homeostasis of number of cells within a tissue / cellular response to forskolin / regulation of mitotic spindle organization / Peptide ligand-binding receptors / positive regulation of release of sequestered calcium ion into cytosol / positive regulation of interleukin-8 production / positive regulation of receptor signaling pathway via JAK-STAT / Regulation of insulin secretion / neuromuscular junction / positive regulation of cholesterol biosynthetic process / negative regulation of insulin secretion / G protein-coupled receptor binding / G protein-coupled receptor activity / response to peptide hormone / adenylate cyclase-inhibiting G protein-coupled receptor signaling pathway / regulation of synaptic plasticity 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: 3.2 Å | |||||||||||||||||||||||||||||||||||||||||||||
データ登録者 | Guo, J. / Zhang, Y. | |||||||||||||||||||||||||||||||||||||||||||||
| 資金援助 | 中国, 1件
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引用 | ジャーナル: Cell Res / 年: 2024タイトル: Structural basis of tethered agonism and G protein coupling of protease-activated receptors. 著者: Jia Guo / Yun-Li Zhou / Yixin Yang / Shimeng Guo / Erli You / Xin Xie / Yi Jiang / Chunyou Mao / H Eric Xu / Yan Zhang / ![]() 要旨: Protease-activated receptors (PARs) are a unique group within the G protein-coupled receptor superfamily, orchestrating cellular responses to extracellular proteases via enzymatic cleavage, which ...Protease-activated receptors (PARs) are a unique group within the G protein-coupled receptor superfamily, orchestrating cellular responses to extracellular proteases via enzymatic cleavage, which triggers intracellular signaling pathways. Protease-activated receptor 1 (PAR1) is a key member of this family and is recognized as a critical pharmacological target for managing thrombotic disorders. In this study, we present cryo-electron microscopy structures of PAR1 in its activated state, induced by its natural tethered agonist (TA), in complex with two distinct downstream proteins, the G and G heterotrimers, respectively. The TA peptide is positioned within a surface pocket, prompting PAR1 activation through notable conformational shifts. Contrary to the typical receptor activation that involves the outward movement of transmembrane helix 6 (TM6), PAR1 activation is characterized by the simultaneous downward shift of TM6 and TM7, coupled with the rotation of a group of aromatic residues. This results in the displacement of an intracellular anion, creating space for downstream G protein binding. Our findings delineate the TA recognition pattern and highlight a distinct role of the second extracellular loop in forming β-sheets with TA within the PAR family, a feature not observed in other TA-activated receptors. Moreover, the nuanced differences in the interactions between intracellular loops 2/3 and the Gα subunit of different G proteins are crucial for determining the specificity of G protein coupling. These insights contribute to our understanding of the ligand binding and activation mechanisms of PARs, illuminating the basis for PAR1's versatility in G protein coupling. | |||||||||||||||||||||||||||||||||||||||||||||
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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 | 8xos.cif.gz | 241.1 KB | 表示 | PDBx/mmCIF形式 |
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| PDB形式 | pdb8xos.ent.gz | 179.1 KB | 表示 | PDB形式 |
| PDBx/mmJSON形式 | 8xos.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 | 8xos_validation.pdf.gz | 1.3 MB | 表示 | wwPDB検証レポート |
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| 文書・詳細版 | 8xos_full_validation.pdf.gz | 1.3 MB | 表示 | |
| XML形式データ | 8xos_validation.xml.gz | 40 KB | 表示 | |
| CIF形式データ | 8xos_validation.cif.gz | 60 KB | 表示 | |
| アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/xo/8xos ftp://data.pdbj.org/pub/pdb/validation_reports/xo/8xos | HTTPS FTP |
-関連構造データ
| 関連構造データ | ![]() 38539MC ![]() 8xorC 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
-Guanine nucleotide-binding protein ... , 3種, 3分子 ABC
| #1: タンパク質 | 分子量: 40313.863 Da / 分子数: 1 / 変異: G203A, A326S / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: GNAI1発現宿主: ![]() 参照: UniProt: P63096 |
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| #2: タンパク質 | 分子量: 41332.137 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: P54311 |
| #3: タンパク質 | 分子量: 7432.554 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: P63212 |
-抗体 / タンパク質 / 非ポリマー , 3種, 4分子 ER

| #4: 抗体 | 分子量: 40523.266 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: 58787.539 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: F2R, CF2R, PAR1, TR発現宿主: ![]() 参照: UniProt: P25116 |
| #6: 化合物 |
-詳細
| 研究の焦点であるリガンドがあるか | N |
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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 | 名称: tethered agonist-bound human PAR1-Gi complex / タイプ: COMPLEX / Entity ID: #1-#5 / 由来: RECOMBINANT |
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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: 7.5 |
| 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 / グリッドのサイズ: 300 divisions/in. / グリッドのタイプ: Quantifoil R1.2/1.3 |
| 急速凍結 | 凍結剤: ETHANE / 湿度: 100 % / 凍結前の試料温度: 277 K |
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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: 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): 500 nm |
| 撮影 | 電子線照射量: 70 e/Å2 / フィルム・検出器のモデル: GATAN K3 (6k 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: 3.2 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 162724 / 対称性のタイプ: POINT |
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万見について




Homo sapiens (ヒト)

中国, 1件
引用


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FIELD EMISSION GUN