+データを開く
-基本情報
登録情報 | データベース: PDB / ID: 8uxh | ||||||
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タイトル | Structure of PKA phosphorylated human RyR2-R420W in the primed state in the presence of calcium | ||||||
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 / establishment of protein localization to endoplasmic reticulum / type B pancreatic cell apoptotic process / Purkinje myocyte to ventricular cardiac muscle cell signaling / suramin binding / regulation of SA node cell action potential / regulation of atrial cardiac muscle cell action potential / left ventricular cardiac muscle tissue morphogenesis / regulation of AV node cell action potential / calcium-induced calcium release activity ...junctional sarcoplasmic reticulum membrane / establishment of protein localization to endoplasmic reticulum / type B pancreatic cell apoptotic process / Purkinje myocyte to ventricular cardiac muscle cell signaling / suramin binding / regulation of SA node cell action potential / regulation of atrial cardiac muscle cell action potential / left ventricular cardiac muscle tissue morphogenesis / regulation of AV node cell action potential / calcium-induced calcium release activity / sarcoplasmic reticulum calcium ion transport / cell communication by electrical coupling involved in cardiac conduction / regulation of ventricular cardiac muscle cell action potential / ventricular cardiac muscle cell action potential / positive regulation of sequestering of calcium ion / cyclic nucleotide binding / negative regulation of calcium-mediated signaling / embryonic heart tube morphogenesis / cardiac muscle hypertrophy / negative regulation of insulin secretion involved in cellular response to glucose stimulus / regulation of cardiac muscle contraction by calcium ion signaling / negative regulation of release of sequestered calcium ion into cytosol / neuronal action potential propagation / insulin secretion involved in cellular response to glucose stimulus / ryanodine-sensitive calcium-release channel activity / response to caffeine / calcium ion transport into cytosol / response to muscle activity / release of sequestered calcium ion into cytosol by sarcoplasmic reticulum / response to redox state / protein maturation by protein folding / 'de novo' protein folding / negative regulation of heart rate / positive regulation of heart rate / FK506 binding / positive regulation of axon regeneration / protein kinase A regulatory subunit binding / cellular response to caffeine / protein kinase A catalytic subunit binding / channel regulator activity / positive regulation of the force of heart contraction / intracellularly gated calcium channel activity / detection of calcium ion / regulation of cardiac muscle contraction / smooth muscle contraction / response to vitamin E / smooth endoplasmic reticulum / regulation of cardiac muscle contraction by regulation of the release of sequestered calcium ion / calcium channel inhibitor activity / cardiac muscle contraction / striated muscle contraction / T cell proliferation / regulation of release of sequestered calcium ion into cytosol by sarcoplasmic reticulum / Ion homeostasis / release of sequestered calcium ion into cytosol / regulation of cytosolic calcium ion concentration / calcium channel complex / cellular response to epinephrine stimulus / response to muscle stretch / sarcoplasmic reticulum membrane / regulation of heart rate / sarcoplasmic reticulum / peptidylprolyl isomerase / establishment of localization in cell / peptidyl-prolyl cis-trans isomerase activity / calcium-mediated signaling / calcium channel activity / response to hydrogen peroxide / Stimuli-sensing channels / sarcolemma / Z disc / intracellular calcium ion homeostasis / calcium ion transport / positive regulation of cytosolic calcium ion concentration / protein refolding / transmembrane transporter binding / calmodulin binding / response to hypoxia / signaling receptor binding / calcium ion binding / enzyme binding / protein-containing complex / identical protein binding / membrane / plasma membrane / cytosol / 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: 3.52 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: Nat Commun / 年: 2024 タイトル: Structural basis for ryanodine receptor type 2 leak in heart failure and arrhythmogenic disorders. 著者: Marco C Miotto / Steven Reiken / Anetta Wronska / Qi Yuan / Haikel Dridi / Yang Liu / Gunnar Weninger / Carl Tchagou / Andrew R Marks / 要旨: Heart failure, the leading cause of mortality and morbidity in the developed world, is characterized by cardiac ryanodine receptor 2 channels that are hyperphosphorylated, oxidized, and depleted of ...Heart failure, the leading cause of mortality and morbidity in the developed world, is characterized by cardiac ryanodine receptor 2 channels that are hyperphosphorylated, oxidized, and depleted of the stabilizing subunit calstabin-2. This results in a diastolic sarcoplasmic reticulum Ca leak that impairs cardiac contractility and triggers arrhythmias. Genetic mutations in ryanodine receptor 2 can also cause Ca leak, leading to arrhythmias and sudden cardiac death. Here, we solved the cryogenic electron microscopy structures of ryanodine receptor 2 variants linked either to heart failure or inherited sudden cardiac death. All are in the primed state, part way between closed and open. Binding of Rycal drugs to ryanodine receptor 2 channels reverts the primed state back towards the closed state, decreasing Ca leak, improving cardiac function, and preventing arrhythmias. We propose a structural-physiological mechanism whereby the ryanodine receptor 2 channel primed state underlies the arrhythmias in heart failure and arrhythmogenic disorders. | ||||||
履歴 |
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-構造の表示
構造ビューア | 分子: MolmilJmol/JSmol |
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-ダウンロードとリンク
-ダウンロード
PDBx/mmCIF形式 | 8uxh.cif.gz | 2.8 MB | 表示 | PDBx/mmCIF形式 |
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PDB形式 | pdb8uxh.ent.gz | 表示 | PDB形式 | |
PDBx/mmJSON形式 | 8uxh.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 | 8uxh_validation.pdf.gz | 1.5 MB | 表示 | wwPDB検証レポート |
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文書・詳細版 | 8uxh_full_validation.pdf.gz | 1.8 MB | 表示 | |
XML形式データ | 8uxh_validation.xml.gz | 407.2 KB | 表示 | |
CIF形式データ | 8uxh_validation.cif.gz | 613.2 KB | 表示 | |
アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/ux/8uxh ftp://data.pdbj.org/pub/pdb/validation_reports/ux/8uxh | HTTPS FTP |
-関連構造データ
関連構造データ | 42764MC 8uq2C 8uq3C 8uq4C 8uq5C 8uxcC 8uxeC 8uxfC 8uxgC 8uxiC 8uxlC 8uxmC C: 同じ文献を引用 (文献) M: このデータのモデリングに利用したマップデータ |
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類似構造データ | 類似検索 - 機能・相同性F&H 検索 |
-リンク
-集合体
登録構造単位 |
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1 |
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-要素
#1: タンパク質 | 分子量: 565315.125 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 #2: 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: Escherichia coli (大腸菌) / 参照: UniProt: P68106, peptidylprolyl isomerase #3: 化合物 | ChemComp-ZN / #4: 化合物 | ChemComp-ATP / #5: 化合物 | ChemComp-CA / 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 |
-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 | |||||||||||||||||||||||||||||||||||||||||||||
緩衝液成分 |
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試料 | 濃度: 2.5 mg/ml / 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES | |||||||||||||||||||||||||||||||||||||||||||||
急速凍結 | 凍結剤: ETHANE |
-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): 500 nm / Cs: 2.7 mm / C2レンズ絞り径: 100 µm |
試料ホルダ | 凍結剤: NITROGEN 試料ホルダーモデル: FEI TITAN KRIOS AUTOGRID HOLDER 最高温度: 100 K / 最低温度: 80 K |
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) |
電子光学装置 | エネルギーフィルター名称: GIF Bioquantum / エネルギーフィルタースリット幅: 20 eV |
画像スキャン | サンプリングサイズ: 5 µm / 横: 5760 / 縦: 4092 |
-解析
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: 3.52 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 55886 / 対称性のタイプ: POINT | |||||||||||||||||||||||||||||||||||||||||||||
原子モデル構築 | PDB-ID: 7UA5 Accession code: 7UA5 / Source name: PDB / タイプ: experimental model | |||||||||||||||||||||||||||||||||||||||||||||
拘束条件 |
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