+データを開く
-基本情報
登録情報 | データベース: EMDB / ID: EMD-33940 | |||||||||||||||||||||
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タイトル | Structure of recombinant RyR2 (Ca2+ dataset, class 3, open state) | |||||||||||||||||||||
マップデータ | Structure of recombinant RyR2 (Ca2 dataset, class 3, open state) | |||||||||||||||||||||
試料 |
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機能・相同性 | 機能・相同性情報 manganese ion transmembrane transport / 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 / organic cyclic compound binding / regulation of AV node cell action potential ...manganese ion transmembrane transport / 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 / organic cyclic compound binding / regulation of AV node cell action potential / calcium-induced calcium release activity / sarcoplasmic reticulum calcium ion transport / Stimuli-sensing channels / Ion homeostasis / 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 / calcium ion transport into cytosol / 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 / response to muscle activity / A band / release of sequestered calcium ion into cytosol by sarcoplasmic reticulum / calcium ion transmembrane import into cytosol / 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 / negative regulation of cytosolic calcium ion concentration / positive regulation of axon regeneration / protein kinase A regulatory subunit binding / extrinsic component of cytoplasmic side of plasma membrane / cellular response to caffeine / channel regulator activity / protein kinase A catalytic subunit binding / response to magnesium ion / positive regulation of the force of heart contraction / intracellularly gated calcium channel activity / detection of calcium ion / 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 / striated muscle contraction / regulation of release of sequestered calcium ion into cytosol by sarcoplasmic reticulum / T cell proliferation / Ion homeostasis / release of sequestered calcium ion into cytosol / regulation of cytosolic calcium ion concentration / calcium channel complex / cellular response to epinephrine stimulus / sarcoplasmic reticulum membrane / response to muscle stretch / regulation of heart rate / sarcomere / sarcoplasmic reticulum / establishment of localization in cell / peptidylprolyl isomerase / peptidyl-prolyl cis-trans isomerase activity / calcium-mediated signaling / calcium ion transmembrane transport / response to hydrogen peroxide / calcium channel activity / Stimuli-sensing channels / sarcolemma / Z disc / response to calcium ion / intracellular calcium ion homeostasis / calcium ion transport / nuclear envelope / positive regulation of cytosolic calcium ion concentration / monoatomic ion transmembrane transport / protein refolding / scaffold protein binding / transmembrane transporter binding / response to hypoxia / calmodulin binding / signaling receptor binding / calcium ion binding / protein kinase binding / enzyme binding / protein-containing complex / identical protein binding / membrane / cytosol / cytoplasm 類似検索 - 分子機能 | |||||||||||||||||||||
生物種 | Mus musculus (ハツカネズミ) / 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: 3.72 Å | |||||||||||||||||||||
データ登録者 | Kobayashi T / Tsutsumi A / Kurebayashi N / Kodama M / Kikkawa M / Murayama T / Ogawa H | |||||||||||||||||||||
資金援助 | 日本, 6件
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引用 | ジャーナル: Nat Commun / 年: 2022 タイトル: Molecular basis for gating of cardiac ryanodine receptor explains the mechanisms for gain- and loss-of function mutations. 著者: Takuya Kobayashi / Akihisa Tsutsumi / Nagomi Kurebayashi / Kei Saito / Masami Kodama / Takashi Sakurai / Masahide Kikkawa / Takashi Murayama / Haruo Ogawa / 要旨: Cardiac ryanodine receptor (RyR2) is a large Ca release channel in the sarcoplasmic reticulum and indispensable for excitation-contraction coupling in the heart. RyR2 is activated by Ca and RyR2 ...Cardiac ryanodine receptor (RyR2) is a large Ca release channel in the sarcoplasmic reticulum and indispensable for excitation-contraction coupling in the heart. RyR2 is activated by Ca and RyR2 mutations are implicated in severe arrhythmogenic diseases. Yet, the structural basis underlying channel opening and how mutations affect the channel remains unknown. Here, we address the gating mechanism of RyR2 by combining high-resolution structures determined by cryo-electron microscopy with quantitative functional analysis of channels carrying various mutations in specific residues. We demonstrated two fundamental mechanisms for channel gating: interactions close to the channel pore stabilize the channel to prevent hyperactivity and a series of interactions in the surrounding regions is necessary for channel opening upon Ca binding. Mutations at the residues involved in the former and the latter mechanisms cause gain-of-function and loss-of-function, respectively. Our results reveal gating mechanisms of the RyR2 channel and alterations by pathogenic mutations at the atomic level. | |||||||||||||||||||||
履歴 |
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-構造の表示
添付画像 |
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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_33940.map.gz | 138.9 MB | EMDBマップデータ形式 | |
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ヘッダ (付随情報) | emd-33940-v30.xml emd-33940.xml | 15.7 KB 15.7 KB | 表示 表示 | EMDBヘッダ |
画像 | emd_33940.png | 125.5 KB | ||
その他 | emd_33940_half_map_1.map.gz emd_33940_half_map_2.map.gz | 113.4 MB 113.3 MB | ||
アーカイブディレクトリ | http://ftp.pdbj.org/pub/emdb/structures/EMD-33940 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-33940 | HTTPS FTP |
-検証レポート
文書・要旨 | emd_33940_validation.pdf.gz | 943.9 KB | 表示 | EMDB検証レポート |
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文書・詳細版 | emd_33940_full_validation.pdf.gz | 943.5 KB | 表示 | |
XML形式データ | emd_33940_validation.xml.gz | 14.2 KB | 表示 | |
CIF形式データ | emd_33940_validation.cif.gz | 17 KB | 表示 | |
アーカイブディレクトリ | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-33940 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-33940 | HTTPS FTP |
-関連構造データ
関連構造データ | 7vmqM 7vmlC 7vmmC 7vmnC 7vmoC 7vmpC 7vmrC M: このマップから作成された原子モデル C: 同じ文献を引用 (文献) |
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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
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 |
-マップ
ファイル | ダウンロード / ファイル: emd_33940.map.gz / 形式: CCP4 / 大きさ: 149.9 MB / タイプ: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||
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注釈 | Structure of recombinant RyR2 (Ca2 dataset, class 3, open state) | ||||||||||||||||||||||||||||||||||||
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: 1.239 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
-ハーフマップ: Structure of recombinant RyR2 (Ca2 dataset, class 3, open state)
ファイル | emd_33940_half_map_1.map | ||||||||||||
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注釈 | Structure of recombinant RyR2 (Ca2 dataset, class 3, open state) | ||||||||||||
投影像・断面図 |
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密度ヒストグラム |
-ハーフマップ: Structure of recombinant RyR2 (Ca2 dataset, class 3, open state)
ファイル | emd_33940_half_map_2.map | ||||||||||||
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注釈 | Structure of recombinant RyR2 (Ca2 dataset, class 3, open state) | ||||||||||||
投影像・断面図 |
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密度ヒストグラム |
-試料の構成要素
-全体 : Recombinant RyR2 in the presence of EGTA
全体 | 名称: Recombinant RyR2 in the presence of EGTA |
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要素 |
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-超分子 #1: Recombinant RyR2 in the presence of EGTA
超分子 | 名称: Recombinant RyR2 in the presence of EGTA / タイプ: complex / キメラ: Yes / ID: 1 / 親要素: 0 / 含まれる分子: #1-#2 / 詳細: in complex with FKBP12.6 |
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由来(天然) | 生物種: Mus musculus (ハツカネズミ) |
組換発現 | 生物種: Homo sapiens (ヒト) |
-超分子 #2: Ryanodine receptor 2
超分子 | 名称: Ryanodine receptor 2 / タイプ: complex / ID: 2 / 親要素: 1 / 含まれる分子: #1 |
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由来(天然) | 生物種: Homo sapiens (ヒト) |
組換発現 | 生物種: Escherichia coli (大腸菌) |
-超分子 #3: FKBP1B
超分子 | 名称: FKBP1B / タイプ: complex / ID: 3 / 親要素: 1 / 含まれる分子: #2 |
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-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 |
-試料調製
緩衝液 | pH: 7.4 |
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糖包埋 | 材質: buffer |
凍結 | 凍結剤: ETHANE |
-電子顕微鏡法
顕微鏡 | FEI TITAN 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: 60.0 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 / 最大 デフォーカス(公称値): 2.0 µm / 最小 デフォーカス(公称値): 0.5 µm |
実験機器 | モデル: Titan Krios / 画像提供: FEI Company |
-画像解析
初期モデル | モデルのタイプ: PDB ENTRY PDBモデル - PDB ID: |
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最終 再構成 | 解像度のタイプ: BY AUTHOR / 解像度: 3.72 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 使用した粒子像数: 40665 |
初期 角度割当 | タイプ: MAXIMUM LIKELIHOOD |
最終 角度割当 | タイプ: MAXIMUM LIKELIHOOD |