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基本情報
| 登録情報 | データベース: PDB / ID: 7u9q | ||||||
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| タイトル | Structure of PKA phosphorylated human RyR2 in the closed state | ||||||
要素 |
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キーワード | MEMBRANE PROTEIN / calcium channel | ||||||
| 機能・相同性 | 機能・相同性情報junctional sarcoplasmic reticulum membrane / type B pancreatic cell apoptotic process / Purkinje myocyte to ventricular cardiac muscle cell signaling / regulation of atrial cardiac muscle cell action potential / left ventricular cardiac muscle tissue morphogenesis / suramin binding / regulation of AV node cell action potential / sarcoplasmic reticulum calcium ion transport / regulation of SA node cell action potential / calcium-induced calcium release activity ...junctional sarcoplasmic reticulum membrane / type B pancreatic cell apoptotic process / Purkinje myocyte to ventricular cardiac muscle cell signaling / regulation of atrial cardiac muscle cell action potential / left ventricular cardiac muscle tissue morphogenesis / suramin binding / regulation of AV node cell action potential / sarcoplasmic reticulum calcium ion transport / regulation of SA node cell action potential / calcium-induced calcium release activity / calcium ion transport into cytosol / embryonic heart tube morphogenesis / cell communication by electrical coupling involved in cardiac conduction / ventricular cardiac muscle cell action potential / negative regulation of calcium-mediated signaling / cardiac muscle hypertrophy / regulation of ventricular cardiac muscle cell action potential / ryanodine-sensitive calcium-release channel activity / release of sequestered calcium ion into cytosol by sarcoplasmic reticulum / negative regulation of release of sequestered calcium ion into cytosol / response to redox state / regulation of cardiac muscle contraction by calcium ion signaling / negative regulation of heart rate / cellular response to caffeine / response to caffeine / response to muscle activity / 'de novo' protein folding / FK506 binding / protein kinase A regulatory subunit binding / protein kinase A catalytic subunit binding / positive regulation of the force of heart contraction / smooth endoplasmic reticulum / intracellularly gated calcium channel activity / regulation of ryanodine-sensitive calcium-release channel activity / detection of calcium ion / regulation of cardiac muscle contraction / response to muscle stretch / regulation of cytosolic calcium ion concentration / positive regulation of heart rate / cardiac muscle contraction / release of sequestered calcium ion into cytosol / calcium channel inhibitor activity / regulation of release of sequestered calcium ion into cytosol by sarcoplasmic reticulum / Ion homeostasis / regulation of cardiac muscle contraction by regulation of the release of sequestered calcium ion / cellular response to epinephrine stimulus / sarcoplasmic reticulum membrane / calcium channel complex / regulation of heart rate / calcium-mediated signaling / peptidylprolyl isomerase / sarcoplasmic reticulum / striated muscle contraction / peptidyl-prolyl cis-trans isomerase activity / calcium channel regulator activity / protein maturation / sarcolemma / intracellular calcium ion homeostasis / Stimuli-sensing channels / Z disc / calcium channel activity / calcium ion transport / protein refolding / protein folding / response to hypoxia / transmembrane transporter binding / calmodulin binding / signaling receptor binding / calcium ion binding / enzyme binding / protein-containing complex / membrane / identical protein binding / plasma membrane / cytoplasm 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: 3.11 Å | ||||||
データ登録者 | Miotto, M.C. / Marks, A.R. | ||||||
| 資金援助 | 米国, 1件
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引用 | ジャーナル: Sci Adv / 年: 2022タイトル: Structural analyses of human ryanodine receptor type 2 channels reveal the mechanisms for sudden cardiac death and treatment. 著者: Marco C Miotto / Gunnar Weninger / Haikel Dridi / Qi Yuan / Yang Liu / Anetta Wronska / Zephan Melville / Leah Sittenfeld / Steven Reiken / Andrew R Marks / ![]() 要旨: Ryanodine receptor type 2 (RyR2) mutations have been linked to an inherited form of exercise-induced sudden cardiac death called catecholaminergic polymorphic ventricular tachycardia (CPVT). CPVT ...Ryanodine receptor type 2 (RyR2) mutations have been linked to an inherited form of exercise-induced sudden cardiac death called catecholaminergic polymorphic ventricular tachycardia (CPVT). CPVT results from stress-induced sarcoplasmic reticular Ca leak via the mutant RyR2 channels during diastole. We present atomic models of human wild-type (WT) RyR2 and the CPVT mutant RyR2-R2474S determined by cryo-electron microscopy with overall resolutions in the range of 2.6 to 3.6 Å, and reaching local resolutions of 2.25 Å, unprecedented for RyR2 channels. Under nonactivating conditions, the RyR2-R2474S channel is in a "primed" state between the closed and open states of WT RyR2, rendering it more sensitive to activation that results in stress-induced Ca leak. The Rycal drug ARM210 binds to RyR2-R2474S, reverting the primed state toward the closed state. Together, these studies provide a mechanism for CPVT and for the therapeutic actions of ARM210. | ||||||
| 履歴 |
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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 | 7u9q.cif.gz | 2.9 MB | 表示 | PDBx/mmCIF形式 |
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| PDB形式 | pdb7u9q.ent.gz | 表示 | PDB形式 | |
| PDBx/mmJSON形式 | 7u9q.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
| アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/u9/7u9q ftp://data.pdbj.org/pub/pdb/validation_reports/u9/7u9q | HTTPS FTP |
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-関連構造データ
| 関連構造データ | ![]() 26405MC ![]() 7u9rC ![]() 7u9tC ![]() 7u9xC ![]() 7u9zC ![]() 7ua1C ![]() 7ua3C ![]() 7ua4C ![]() 7ua5C ![]() 7ua9C 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
| #1: タンパク質 | 分子量: 11798.501 Da / 分子数: 4 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: FKBP1B, FKBP12.6, FKBP1L, FKBP9, OTK4 / 発現宿主: ![]() #2: タンパク質 | 分子量: 565286.125 Da / 分子数: 4 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: RYR2 / 細胞株 (発現宿主): HEK293 / 発現宿主: Homo sapiens (ヒト) / 参照: UniProt: Q92736#3: 化合物 | ChemComp-ZN / #4: 化合物 | ChemComp-ATP / 研究の焦点であるリガンドがあるか | Y | Has protein modification | 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 |
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| 由来(天然) |
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| 由来(組換発現) |
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| 緩衝液 | pH: 7.4 詳細: Xanthine was made fresh to avoid aggregation. Xanthine stock solution was 10 mM in NaOH 0.5 N. | ||||||||||||||||||||||||||||||||||||||||||||||||||
| 緩衝液成分 |
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| 試料 | 濃度: 1.33 mg/ml / 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES | ||||||||||||||||||||||||||||||||||||||||||||||||||
| 試料支持 | グリッドのタイプ: UltrAuFoil R0.6/1 | ||||||||||||||||||||||||||||||||||||||||||||||||||
| 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: 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): 1200 nm / 最小 デフォーカス(公称値): 400 nm |
| 撮影 | 電子線照射量: 58 e/Å2 フィルム・検出器のモデル: GATAN K3 BIOQUANTUM (6k x 4k) |
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解析
| EMソフトウェア | 名称: cryoSPARC / カテゴリ: CTF補正 |
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| CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION |
| 3次元再構成 | 解像度: 3.11 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 94476 / 対称性のタイプ: POINT |
| 原子モデル構築 | PDB-ID: 7U9X Accession code: 7U9X / Source name: PDB / タイプ: experimental model |
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万見について




Homo sapiens (ヒト)
米国, 1件
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FIELD EMISSION GUN