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データを開く
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基本情報
| 登録情報 | ![]() | |||||||||
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| タイトル | Cryo-EM structure of Thromboxane A2 receptor-miniGq protein complex bound to U46619 | |||||||||
マップデータ | sharpened composite cryo-EM map of Thromboxane A2 receptor-Gq Protein Complex bound to U46619 | |||||||||
試料 |
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キーワード | Single particle cryo-EM / GPCR / G-proteins / MEMBRANE PROTEIN | |||||||||
| 機能・相同性 | 機能・相同性情報thromboxane A2 receptor activity / Prostanoid ligand receptors / positive regulation of smooth muscle contraction / positive regulation of blood pressure / negative regulation of cell migration involved in sprouting angiogenesis / response to testosterone / smooth muscle contraction / positive regulation of blood coagulation / positive regulation of vasoconstriction / response to nutrient ...thromboxane A2 receptor activity / Prostanoid ligand receptors / positive regulation of smooth muscle contraction / positive regulation of blood pressure / negative regulation of cell migration involved in sprouting angiogenesis / response to testosterone / smooth muscle contraction / positive regulation of blood coagulation / positive regulation of vasoconstriction / response to nutrient / guanyl-nucleotide exchange factor activity / acrosomal vesicle / positive regulation of angiogenesis / Olfactory Signaling Pathway / Activation of the phototransduction cascade / G protein-coupled acetylcholine receptor signaling pathway / G beta:gamma signalling through PLC beta / Presynaptic function of Kainate receptors / Thromboxane signalling through TP receptor / Activation of G protein gated Potassium channels / Inhibition of voltage gated Ca2+ channels via Gbeta/gamma subunits / G-protein activation / Glucagon signaling in metabolic regulation / G beta:gamma signalling through CDC42 / Prostacyclin signalling through prostacyclin receptor / G beta:gamma signalling through BTK / Synthesis, secretion, and inactivation of Glucagon-like Peptide-1 (GLP-1) / photoreceptor disc membrane / ADP signalling through P2Y purinoceptor 12 / Sensory perception of sweet, bitter, and umami (glutamate) taste / Glucagon-type ligand receptors / Adrenaline,noradrenaline inhibits insulin secretion / Vasopressin regulates renal water homeostasis via Aquaporins / Glucagon-like Peptide-1 (GLP1) regulates insulin secretion / G alpha (z) signalling events / cellular response to catecholamine stimulus / ADP signalling through P2Y purinoceptor 1 / ADORA2B mediated anti-inflammatory cytokines production / G beta:gamma signalling through PI3Kgamma / adenylate cyclase-activating dopamine receptor signaling pathway / Cooperation of PDCL (PhLP1) and TRiC/CCT in G-protein beta folding / GPER1 signaling / cellular response to prostaglandin E stimulus / heterotrimeric G-protein complex / G-protein beta-subunit binding / G alpha (12/13) signalling events / Inactivation, recovery and regulation of the phototransduction cascade / extracellular vesicle / sensory perception of taste / adenylate cyclase-activating G protein-coupled receptor signaling pathway / Thrombin signalling through proteinase activated receptors (PARs) / signaling receptor complex adaptor activity / positive regulation of cytosolic calcium ion concentration / cellular response to lipopolysaccharide / retina development in camera-type eye / GTPase binding / fibroblast proliferation / Ca2+ pathway / High laminar flow shear stress activates signaling by PIEZO1 and PECAM1:CDH5:KDR in endothelial cells / G alpha (i) signalling events / G alpha (s) signalling events / phospholipase C-activating G protein-coupled receptor signaling pathway / G alpha (q) signalling events / response to ethanol / Ras protein signal transduction / cell population proliferation / Extra-nuclear estrogen signaling / nuclear speck / response to xenobiotic stimulus / G protein-coupled receptor signaling pathway / inflammatory response / lysosomal membrane / GTPase activity / synapse / protein-containing complex binding / signal transduction / extracellular exosome / membrane / plasma membrane / cytoplasm / cytosol 類似検索 - 分子機能 | |||||||||
| 生物種 | Homo sapiens (ヒト) | |||||||||
| 手法 | 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度: 3.26 Å | |||||||||
データ登録者 | Matzov D / Krawinski P / Caffrey M / Shalev Benami M | |||||||||
| 資金援助 | European Union, 1件
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引用 | ジャーナル: Nat Commun / 年: 2026タイトル: Structural and dynamic insights into agonist recognition and function of the thromboxane A receptor. 著者: Pawel Krawinski / Donna Matzov / Aoife Ryder / Kanhaya Lal / Dmitry S Karlov / Georges Chalhoub / Eamon P Mulvaney / B Therese Kinsella / Peter J McCormick / Martin Caffrey / Irina G ...著者: Pawel Krawinski / Donna Matzov / Aoife Ryder / Kanhaya Lal / Dmitry S Karlov / Georges Chalhoub / Eamon P Mulvaney / B Therese Kinsella / Peter J McCormick / Martin Caffrey / Irina G Tikhonova / Moran Shalev-Benami / ![]() 要旨: The thromboxane A receptor (TP), expressed in platelets and smooth muscle, plays an important role in blood clotting and muscle contraction. The endogenous ligand of this G protein-coupled receptor ...The thromboxane A receptor (TP), expressed in platelets and smooth muscle, plays an important role in blood clotting and muscle contraction. The endogenous ligand of this G protein-coupled receptor (GPCR), thromboxane A (TXA), is a short-lived arachidonic acid metabolite with a half-life of ∼30 seconds, which makes investigating the TP structure and activation mechanism highly challenging. Here we determine the structures of the TP in complex with the synthetic agonists, U46619 and I-BOP, stable analogues of the natural ligand, in the presence of the signalling protein partner, G. The structures reveal a unique activation switch for the receptor that differs from typical class A GPCR family members. Complemented by functional studies, mutational analysis, docking, and molecular dynamics (MD) simulations, our investigation highlights the differences between agonist and antagonist binding and explores the ligand entry mechanism to the binding pocket from within the membrane via a molecular gate composed of two transmembrane helices. In addition, our study provides crucial information to aid in the rational design of compounds targeting the TP, and offers mechanistic insights into inherited disorders associated with mutations in the TP. | |||||||||
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構造の表示
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ダウンロードとリンク
-EMDBアーカイブ
| マップデータ | emd_51324.map.gz | 125.5 MB | EMDBマップデータ形式 | |
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| ヘッダ (付随情報) | emd-51324-v30.xml emd-51324.xml | 24 KB 24 KB | 表示 表示 | EMDBヘッダ |
| 画像 | emd_51324.png | 79.8 KB | ||
| Filedesc metadata | emd-51324.cif.gz | 7.2 KB | ||
| その他 | emd_51324_additional_1.map.gz | 87.2 MB | ||
| アーカイブディレクトリ | http://ftp.pdbj.org/pub/emdb/structures/EMD-51324 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-51324 | HTTPS FTP |
-関連構造データ
| 関連構造データ | ![]() 9gg5MC ![]() 9gggC C: 同じ文献を引用 ( M: このマップから作成された原子モデル |
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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
| EMDBのページ | EMDB (EBI/PDBe) / EMDataResource |
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| 「今月の分子」の関連する項目 |
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マップ
| ファイル | ダウンロード / ファイル: emd_51324.map.gz / 形式: CCP4 / 大きさ: 178 MB / タイプ: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||
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| 注釈 | sharpened composite cryo-EM map of Thromboxane A2 receptor-Gq Protein Complex bound to U46619 | ||||||||||||||||||||||||||||||||||||
| 投影像・断面図 | 画像のコントロール
画像は Spider により作成 | ||||||||||||||||||||||||||||||||||||
| ボクセルのサイズ | X=Y=Z: 0.8423 Å | ||||||||||||||||||||||||||||||||||||
| 密度 |
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| 対称性 | 空間群: 1 | ||||||||||||||||||||||||||||||||||||
| 詳細 | EMDB XML:
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-添付データ
-追加マップ: composite cryo-EM map of Thromboxane A2 receptor-Gq Protein...
| ファイル | emd_51324_additional_1.map | ||||||||||||
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| 注釈 | composite cryo-EM map of Thromboxane A2 receptor-Gq Protein Complex bound to U46619 | ||||||||||||
| 投影像・断面図 |
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| 密度ヒストグラム |
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試料の構成要素
-全体 : Thromboxane A2 receptor-Gq Protein Complex
| 全体 | 名称: Thromboxane A2 receptor-Gq Protein Complex |
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| 要素 |
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-超分子 #1: Thromboxane A2 receptor-Gq Protein Complex
| 超分子 | 名称: Thromboxane A2 receptor-Gq Protein Complex / タイプ: complex / ID: 1 / 親要素: 0 / 含まれる分子: #1-#4 |
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| 由来(天然) | 生物種: Homo sapiens (ヒト) |
-分子 #1: Thromboxane A2 receptor
| 分子 | 名称: Thromboxane A2 receptor / タイプ: protein_or_peptide / ID: 1 / 詳細: Thromboxane A2 receptor / コピー数: 1 / 光学異性体: LEVO |
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| 由来(天然) | 生物種: Homo sapiens (ヒト) |
| 分子量 | 理論値: 37.462969 KDa |
| 組換発現 | 生物種: ![]() |
| 配列 | 文字列: MWPNGSSLGP CFRPTNITLE ERRLIASPWF AASFCVVGLA SNLLALSVLA GARQGGSHTR SSFLTFLCGL VLTDFLGLLV TGTIVVSQH AALFEWHAVD PGCRLCRFMG VVMIFFGLSP LLLGAAMASE RYLGITRPFS RPAVASQRRA WATVGLVWAA A LALGLLPL ...文字列: MWPNGSSLGP CFRPTNITLE ERRLIASPWF AASFCVVGLA SNLLALSVLA GARQGGSHTR SSFLTFLCGL VLTDFLGLLV TGTIVVSQH AALFEWHAVD PGCRLCRFMG VVMIFFGLSP LLLGAAMASE RYLGITRPFS RPAVASQRRA WATVGLVWAA A LALGLLPL LGVGRYTVQY PGSWCFLTLG AESGDVAFGL LFSMLGGLSV GLSFLLNTVS VATLCHVYHG QEAAQQRPRD SE VEMMAQL LGIMVVASVC WLPLLVFIAQ TVLRNPPAMS PAGQLSRTTE KELLIYLRVA TWNQILDPWV YILFRRAVLR RLQ PRLSTR PRSLSLQPQL TQRSGLQ UniProtKB: Thromboxane A2 receptor |
-分子 #2: Engineered miniGq
| 分子 | 名称: Engineered miniGq / タイプ: protein_or_peptide / ID: 2 / 詳細: Mini Gq / コピー数: 1 / 光学異性体: LEVO |
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| 由来(天然) | 生物種: Homo sapiens (ヒト) |
| 分子量 | 理論値: 28.084832 KDa |
| 組換発現 | 生物種: ![]() |
| 配列 | 文字列: MGSTVSAEDK AAAERSKMID KNLREDGEKA RRTLRLLLLG ADNSGKSTIV KQMRILHGGS GGSGGTSGIF ETKFQVDKVN FHMFDVGGQ RDERRKWIQC FNDVTAIIFV VDSSDYNRLQ EALNDFKSIW NNRWLRTISV ILFLNKQDLL AEKVLAGKSK I EDYFPEFA ...文字列: MGSTVSAEDK AAAERSKMID KNLREDGEKA RRTLRLLLLG ADNSGKSTIV KQMRILHGGS GGSGGTSGIF ETKFQVDKVN FHMFDVGGQ RDERRKWIQC FNDVTAIIFV VDSSDYNRLQ EALNDFKSIW NNRWLRTISV ILFLNKQDLL AEKVLAGKSK I EDYFPEFA RYTTPEDATP EPGEDPRVTR AKYFIRKEFV DISTASGDGR HICYPHFTCA VDTENARRIF NDCKDIILQM NL REYNLV |
-分子 #3: Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1
| 分子 | 名称: Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1 タイプ: protein_or_peptide / ID: 3 / コピー数: 1 / 光学異性体: LEVO |
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| 由来(天然) | 生物種: Homo sapiens (ヒト) |
| 分子量 | 理論値: 37.41693 KDa |
| 組換発現 | 生物種: ![]() |
| 配列 | 文字列: MSELDQLRQE AEQLKNQIRD ARKACADATL SQITNNIDPV GRIQMRTRRT LRGHLAKIYA MHWGTDSRLL VSASQDGKLI IWDSYTTNK VHAIPLRSSW VMTCAYAPSG NYVACGGLDN ICSIYNLKTR EGNVRVSREL AGHTGYLSCC RFLDDNQIVT S SGDTTCAL ...文字列: MSELDQLRQE AEQLKNQIRD ARKACADATL SQITNNIDPV GRIQMRTRRT LRGHLAKIYA MHWGTDSRLL VSASQDGKLI IWDSYTTNK VHAIPLRSSW VMTCAYAPSG NYVACGGLDN ICSIYNLKTR EGNVRVSREL AGHTGYLSCC RFLDDNQIVT S SGDTTCAL WDIETGQQTT TFTGHTGDVM SLSLAPDTRL FVSGACDASA KLWDVREGMC RQTFTGHESD INAICFFPNG NA FATGSDD ATCRLFDLRA DQELMTYSHD NIICGITSVS FSKSGRLLLA GYDDFNCNVW DALKADRAGV LAGHDNRVSC LGV TDDGMA VATGSWDSFL KIWN UniProtKB: Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1 |
-分子 #4: Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2
| 分子 | 名称: Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2 タイプ: protein_or_peptide / ID: 4 / コピー数: 1 / 光学異性体: LEVO |
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| 由来(天然) | 生物種: Homo sapiens (ヒト) |
| 分子量 | 理論値: 7.861143 KDa |
| 組換発現 | 生物種: ![]() |
| 配列 | 文字列: MASNNTASIA QARKLVEQLK MEANIDRIKV SKAAADLMAY CEAHAKEDPL LTPVPASENP FREKKFFCAI L UniProtKB: Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2 |
-分子 #5: (5Z)-7-{(1R,4S,5S,6R)-6-[(1E,3S)-3-hydroxyoct-1-en-1-yl]-2-oxabic...
| 分子 | 名称: (5Z)-7-{(1R,4S,5S,6R)-6-[(1E,3S)-3-hydroxyoct-1-en-1-yl]-2-oxabicyclo[2.2.1]hept-5-yl}hept-5-enoic acid タイプ: ligand / ID: 5 / コピー数: 1 / 式: PUC |
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| 分子量 | 理論値: 350.492 Da |
| Chemical component information | ![]() ChemComp-PUC: |
-分子 #6: CHOLESTEROL
| 分子 | 名称: CHOLESTEROL / タイプ: ligand / ID: 6 / コピー数: 4 / 式: CLR |
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| 分子量 | 理論値: 386.654 Da |
| Chemical component information | ![]() ChemComp-CLR: |
-実験情報
-構造解析
| 手法 | クライオ電子顕微鏡法 |
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解析 | 単粒子再構成法 |
| 試料の集合状態 | particle |
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試料調製
| 緩衝液 | pH: 7.5 |
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| グリッド | モデル: Quantifoil R1.2/1.3 / 材質: GOLD / メッシュ: 300 / 前処理 - タイプ: GLOW DISCHARGE / 前処理 - 時間: 90 sec. |
| 凍結 | 凍結剤: ETHANE |
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電子顕微鏡法
| 顕微鏡 | TFS KRIOS |
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| 撮影 | フィルム・検出器のモデル: GATAN K3 (6k x 4k) / 平均電子線量: 38.4 e/Å2 |
| 電子線 | 加速電圧: 300 kV / 電子線源: FIELD EMISSION GUN |
| 電子光学系 | 照射モード: FLOOD BEAM / 撮影モード: BRIGHT FIELD / Cs: 2.7 mm / 最大 デフォーカス(公称値): 20.0 µm / 最小 デフォーカス(公称値): 8.0 µm |
| 実験機器 | ![]() モデル: Titan Krios / 画像提供: FEI Company |
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コントローラー
万見について




キーワード
Homo sapiens (ヒト)
データ登録者
引用































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Y (Row.)
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解析
FIELD EMISSION GUN
