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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: 7vmo | |||||||||||||||||||||
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| タイトル | Structure of recombinant RyR2 (Ca2+ dataset, class 1, open state) | |||||||||||||||||||||
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キーワード | MEMBRANE PROTEIN / CALCIUM / CALCIUM CHANNEL / CALCIUM TRANSPORT / ION TRANSPORT / IONIC CHANNEL / METAL TRANSPORT / ER/SR MEMBRANE / RYANODINE RECEPTOR / RYANODINE / RECEPTOR / WILD TYPE | |||||||||||||||||||||
| 機能・相同性 | 機能・相同性情報establishment of protein localization to endoplasmic reticulum / 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 / regulation of SA node cell action potential / Stimuli-sensing channels / regulation of ventricular cardiac muscle cell action potential ...establishment of protein localization to endoplasmic reticulum / 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 / regulation of SA node cell action potential / Stimuli-sensing channels / regulation of ventricular cardiac muscle cell action potential / ventricular cardiac muscle cell action potential / : / embryonic heart tube morphogenesis / negative regulation of calcium-mediated signaling / Ion homeostasis / cardiac muscle hypertrophy / negative regulation of insulin secretion involved in cellular response to glucose stimulus / neuronal action potential propagation / calcium ion transport into cytosol / negative regulation of release of sequestered calcium ion into cytosol / insulin secretion involved in cellular response to glucose stimulus / ryanodine-sensitive calcium-release channel activity / response to caffeine / release of sequestered calcium ion into cytosol by sarcoplasmic reticulum / response to redox state / negative regulation of heart rate / cellular response to caffeine / 'de novo' protein folding / calcium ion transmembrane import into cytosol / FK506 binding / response to muscle activity / protein kinase A catalytic subunit binding / protein kinase A regulatory subunit binding / positive regulation of the force of heart contraction / intracellularly gated calcium channel activity / smooth endoplasmic reticulum / smooth muscle contraction / detection of calcium ion / T cell proliferation / positive regulation of heart rate / regulation of cardiac muscle contraction by regulation of the release of sequestered calcium ion / calcium channel inhibitor activity / regulation of release of sequestered calcium ion into cytosol by sarcoplasmic reticulum / Ion homeostasis / response to muscle stretch / release of sequestered calcium ion into cytosol / cellular response to epinephrine stimulus / calcium channel complex / sarcoplasmic reticulum membrane / regulation of heart rate / sarcomere / sarcoplasmic reticulum / protein maturation / peptidylprolyl isomerase / calcium channel regulator activity / peptidyl-prolyl cis-trans isomerase activity / establishment of localization in cell / calcium-mediated signaling / calcium ion transmembrane transport / Stimuli-sensing channels / calcium channel activity / Z disc / intracellular calcium ion homeostasis / calcium ion transport / positive regulation of cytosolic calcium ion concentration / protein refolding / 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 / 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: 3.5 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. | |||||||||||||||||||||
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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 | 7vmo.cif.gz | 2.7 MB | 表示 | PDBx/mmCIF形式 |
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| PDB形式 | pdb7vmo.ent.gz | 表示 | PDB形式 | |
| PDBx/mmJSON形式 | 7vmo.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/vm/7vmo ftp://data.pdbj.org/pub/pdb/validation_reports/vm/7vmo | HTTPS FTP |
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-関連構造データ
| 関連構造データ | ![]() 33938MC ![]() 7vmlC ![]() 7vmmC ![]() 7vmnC ![]() 7vmpC ![]() 7vmrC 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: 533653.562 Da / 分子数: 4 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() Homo sapiens (ヒト) / 参照: UniProt: E9Q401#2: タンパク質 | 分子量: 18984.316 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 / 発現宿主: ![]() #3: 化合物 | ChemComp-ZN / #4: 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 |
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試料調製
| 構成要素 | 名称: Recombinant RyR2 in the presence of Ca2+ / タイプ: CELL / 詳細: in complex with FKBP12.6 / Entity ID: #1-#2 / 由来: RECOMBINANT |
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| 由来(天然) | 生物種: ![]() |
| 由来(組換発現) | 生物種: Homo sapiens (ヒト) |
| 緩衝液 | pH: 7.4 |
| 試料 | 包埋: YES / シャドウイング: NO / 染色: NO / 凍結: YES |
| EM embedding | Material: buffer |
| 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 |
| 撮影 | 電子線照射量: 60 e/Å2 / フィルム・検出器のモデル: GATAN K3 (6k x 4k) |
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解析
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| CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||
| 3次元再構成 | 解像度: 3.5 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 45432 / 対称性のタイプ: POINT | ||||||||||||||||||||||||
| 精密化 | 立体化学のターゲット値: GeoStd + Monomer Library + CDL v1.2 | ||||||||||||||||||||||||
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万見について





Homo sapiens (ヒト)
日本, 6件
引用











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FIELD EMISSION GUN