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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: 6ji0 | ||||||
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タイトル | Structure of RyR2 (F/A/C/Ca2+ dataset) | ||||||
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![]() | MEMBRANE PROTEIN / cryo-EM | ||||||
機能・相同性 | ![]() positive regulation of sequestering of calcium ion / negative regulation of calcium-mediated signaling / negative regulation of insulin secretion involved in cellular response to glucose stimulus / neuronal action potential propagation / negative regulation of release of sequestered calcium ion into cytosol / insulin secretion involved in cellular response to glucose stimulus / response to redox state / 'de novo' protein folding / negative regulation of heart rate / FK506 binding ...positive regulation of sequestering of calcium ion / negative regulation of calcium-mediated signaling / negative regulation of insulin secretion involved in cellular response to glucose stimulus / neuronal action potential propagation / negative regulation of release of sequestered calcium ion into cytosol / insulin secretion involved in cellular response to glucose stimulus / response to redox state / 'de novo' protein folding / negative regulation of heart rate / FK506 binding / smooth muscle contraction / regulation of cardiac muscle contraction by regulation of the release of sequestered calcium ion / T cell proliferation / calcium channel inhibitor activity / Ion homeostasis / regulation of release of sequestered calcium ion into cytosol by sarcoplasmic reticulum / release of sequestered calcium ion into cytosol / calcium channel complex / sarcoplasmic reticulum membrane / protein maturation / calcium channel regulator activity / peptidylprolyl isomerase / peptidyl-prolyl cis-trans isomerase activity / Stimuli-sensing channels / calcium-mediated signaling / Z disc / positive regulation of cytosolic calcium ion concentration / protein refolding / transmembrane transporter binding / signaling receptor binding / membrane / cytoplasm 類似検索 - 分子機能 | ||||||
生物種 | ![]() ![]() ![]() | ||||||
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: 4.2 Å | ||||||
![]() | Gong, D.S. / Chi, X.M. / Zhou, G.W. / Huang, G.X.Y. / Lei, J.L. / Yan, N. | ||||||
![]() | ![]() タイトル: Modulation of cardiac ryanodine receptor 2 by calmodulin. 著者: Deshun Gong / Ximin Chi / Jinhong Wei / Gewei Zhou / Gaoxingyu Huang / Lin Zhang / Ruiwu Wang / Jianlin Lei / S R Wayne Chen / Nieng Yan / ![]() ![]() ![]() 要旨: The high-conductance intracellular calcium (Ca) channel RyR2 is essential for the coupling of excitation and contraction in cardiac muscle. Among various modulators, calmodulin (CaM) regulates RyR2 ...The high-conductance intracellular calcium (Ca) channel RyR2 is essential for the coupling of excitation and contraction in cardiac muscle. Among various modulators, calmodulin (CaM) regulates RyR2 in a Ca-dependent manner. Here we reveal the regulatory mechanism by which porcine RyR2 is modulated by human CaM through the structural determination of RyR2 under eight conditions. Apo-CaM and Ca-CaM bind to distinct but overlapping sites in an elongated cleft formed by the handle, helical and central domains. The shift in CaM-binding sites on RyR2 is controlled by Ca binding to CaM, rather than to RyR2. Ca-CaM induces rotations and intradomain shifts of individual central domains, resulting in pore closure of the PCB95 and Ca-activated channel. By contrast, the pore of the ATP, caffeine and Ca-activated channel remains open in the presence of Ca-CaM, which suggests that Ca-CaM is one of the many competing modulators of RyR2 gating. | ||||||
履歴 |
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構造の表示
ムービー |
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構造ビューア | 分子: ![]() ![]() |
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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 | ![]() | 2.4 MB | 表示 | ![]() |
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PDB形式 | ![]() | 表示 | ![]() | |
PDBx/mmJSON形式 | ![]() | ツリー表示 | ![]() | |
その他 | ![]() |
-検証レポート
文書・要旨 | ![]() | 1.5 MB | 表示 | ![]() |
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文書・詳細版 | ![]() | 1.6 MB | 表示 | |
XML形式データ | ![]() | 347.6 KB | 表示 | |
CIF形式データ | ![]() | 538.2 KB | 表示 | |
アーカイブディレクトリ | ![]() ![]() | HTTPS FTP |
-関連構造データ
関連構造データ | ![]() 9831MC ![]() 9833C ![]() 9834C ![]() 9836C ![]() 9837C ![]() 9879C ![]() 9880C ![]() 9889C ![]() 6ji8C ![]() 6jiiC ![]() 6jiuC ![]() 6jiyC ![]() 6jrrC ![]() 6jrsC ![]() 6jv2C 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 | |
電子顕微鏡画像生データ | ![]() Data size: 162.0 Data #1: motion corrected 2D micrographs from 45 frames of afTMEM16/nanodisc complex in the absence of Ca2+ [micrographs - single frame]) |
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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
-タンパク質 , 2種, 8分子 ACEGBDFH
#1: タンパク質 | 分子量: 564905.625 Da / 分子数: 4 / 由来タイプ: 天然 / 由来: (天然) ![]() ![]() #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) ![]() ![]() ![]() |
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-非ポリマー , 4種, 16分子 






#3: 化合物 | ChemComp-ZN / #4: 化合物 | ChemComp-ATP / #5: 化合物 | ChemComp-CA / #6: 化合物 | ChemComp-CFF / |
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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: RyR2 in complex with FKBP12.6 / タイプ: COMPLEX / Entity ID: #1-#2 / 由来: NATURAL |
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由来(天然) | 生物種: ![]() ![]() |
緩衝液 | pH: 7.4 |
試料 | 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 |
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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: ![]() |
電子レンズ | モード: BRIGHT FIELD |
撮影 | 電子線照射量: 50 e/Å2 フィルム・検出器のモデル: GATAN K2 SUMMIT (4k x 4k) |
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解析
EMソフトウェア |
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CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||
対称性 | 点対称性: C4 (4回回転対称) | ||||||||||||||||
3次元再構成 | 解像度: 4.2 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 78841 / 対称性のタイプ: POINT |