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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: 8duj | |||||||||
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| タイトル | Global map in C1 of RyR1 particles in complex with ImperaCalcin | |||||||||
要素 |
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キーワード | MEMBRANE PROTEIN / ryanodine receptor / ion channel / snake toxin / calcin / complex / toxin | |||||||||
| 機能・相同性 | 機能・相同性情報ATP-gated ion channel activity / : / negative regulation of calcium-mediated signaling / negative regulation of insulin secretion involved in cellular response to glucose stimulus / neuronal action potential propagation / insulin secretion involved in cellular response to glucose stimulus / negative regulation of release of sequestered calcium ion into cytosol / terminal cisterna / ryanodine-sensitive calcium-release channel activity / ryanodine receptor complex ...ATP-gated ion channel activity / : / negative regulation of calcium-mediated signaling / negative regulation of insulin secretion involved in cellular response to glucose stimulus / neuronal action potential propagation / insulin secretion involved in cellular response to glucose stimulus / negative regulation of release of sequestered calcium ion into cytosol / terminal cisterna / ryanodine-sensitive calcium-release channel activity / ryanodine receptor complex / release of sequestered calcium ion into cytosol by sarcoplasmic reticulum / response to redox state / CaM pathway / Cam-PDE 1 activation / ossification involved in bone maturation / Sodium/Calcium exchangers / Calmodulin induced events / negative regulation of heart rate / cellular response to caffeine / Reduction of cytosolic Ca++ levels / 'de novo' protein folding / Activation of Ca-permeable Kainate Receptor / CREB1 phosphorylation through the activation of CaMKII/CaMKK/CaMKIV cascasde / Loss of phosphorylation of MECP2 at T308 / CREB1 phosphorylation through the activation of Adenylate Cyclase / skin development / negative regulation of high voltage-gated calcium channel activity / PKA activation / CaMK IV-mediated phosphorylation of CREB / Glycogen breakdown (glycogenolysis) / FK506 binding / CLEC7A (Dectin-1) induces NFAT activation / Activation of RAC1 downstream of NMDARs / negative regulation of ryanodine-sensitive calcium-release channel activity / organelle localization by membrane tethering / mitochondrion-endoplasmic reticulum membrane tethering / autophagosome membrane docking / negative regulation of calcium ion export across plasma membrane / regulation of ryanodine-sensitive calcium-release channel activity / organelle membrane / regulation of cardiac muscle cell action potential / presynaptic endocytosis / Synthesis of IP3 and IP4 in the cytosol / intracellularly gated calcium channel activity / smooth endoplasmic reticulum / Phase 0 - rapid depolarisation / Negative regulation of NMDA receptor-mediated neuronal transmission / outflow tract morphogenesis / Unblocking of NMDA receptors, glutamate binding and activation / RHO GTPases activate PAKs / calcineurin-mediated signaling / regulation of cell communication by electrical coupling involved in cardiac conduction / Ion transport by P-type ATPases / smooth muscle contraction / Uptake and function of anthrax toxins / protein phosphatase activator activity / Long-term potentiation / Calcineurin activates NFAT / Regulation of MECP2 expression and activity / DARPP-32 events / T cell proliferation / Smooth Muscle Contraction / detection of calcium ion / toxic substance binding / regulation of cardiac muscle contraction / voltage-gated calcium channel activity / catalytic complex / RHO GTPases activate IQGAPs / calcium channel inhibitor activity / presynaptic cytosol / striated muscle contraction / cellular response to interferon-beta / Activation of AMPK downstream of NMDARs / skeletal muscle fiber development / Ion homeostasis / regulation of release of sequestered calcium ion into cytosol by sarcoplasmic reticulum / Protein methylation / eNOS activation / Tetrahydrobiopterin (BH4) synthesis, recycling, salvage and regulation / titin binding / release of sequestered calcium ion into cytosol / regulation of calcium-mediated signaling / regulation of cardiac muscle contraction by regulation of the release of sequestered calcium ion / voltage-gated potassium channel complex / FCERI mediated Ca+2 mobilization / sarcoplasmic reticulum membrane / calcium channel complex / substantia nigra development / FCGR3A-mediated IL10 synthesis / regulation of heart rate / cellular response to calcium ion / Antigen activates B Cell Receptor (BCR) leading to generation of second messengers / Ras activation upon Ca2+ influx through NMDA receptor / muscle contraction / calyx of Held / adenylate cyclase activator activity / VEGFR2 mediated cell proliferation / regulation of cytokinesis / VEGFR2 mediated vascular permeability / sarcomere 類似検索 - 分子機能 | |||||||||
| 生物種 | Homo sapiens (ヒト)![]() Pandinus imperator (サソリ) | |||||||||
| 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: 3.7 Å | |||||||||
データ登録者 | Haji-Ghassemi, O. / Van Petegm, F. | |||||||||
| 資金援助 | カナダ, 2件
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引用 | ジャーナル: Sci Adv / 年: 2023タイトル: Cryo-EM analysis of scorpion toxin binding to Ryanodine Receptors reveals subconductance that is abolished by PKA phosphorylation. 著者: Omid Haji-Ghassemi / Yu Seby Chen / Kellie Woll / Georgina B Gurrola / Carmen R Valdivia / Wenxuan Cai / Songhua Li / Hector H Valdivia / Filip Van Petegem / ![]() 要旨: Calcins are peptides from scorpion venom with the unique ability to cross cell membranes, gaining access to intracellular targets. Ryanodine Receptors (RyR) are intracellular ion channels that ...Calcins are peptides from scorpion venom with the unique ability to cross cell membranes, gaining access to intracellular targets. Ryanodine Receptors (RyR) are intracellular ion channels that control release of Ca from the endoplasmic and sarcoplasmic reticulum. Calcins target RyRs and induce long-lived subconductance states, whereby single-channel currents are decreased. We used cryo-electron microscopy to reveal the binding and structural effects of imperacalcin, showing that it opens the channel pore and causes large asymmetry throughout the cytosolic assembly of the tetrameric RyR. This also creates multiple extended ion conduction pathways beyond the transmembrane region, resulting in subconductance. Phosphorylation of imperacalcin by protein kinase A prevents its binding to RyR through direct steric hindrance, showing how posttranslational modifications made by the host organism can determine the fate of a natural toxin. The structure provides a direct template for developing calcin analogs that result in full channel block, with potential to treat RyR-related disorders. | |||||||||
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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 | 8duj.cif.gz | 2.5 MB | 表示 | PDBx/mmCIF形式 |
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| PDB形式 | pdb8duj.ent.gz | 表示 | PDB形式 | |
| PDBx/mmJSON形式 | 8duj.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/du/8duj ftp://data.pdbj.org/pub/pdb/validation_reports/du/8duj | HTTPS FTP |
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-関連構造データ
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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・ペプチド , 1種, 1分子 M
| #1: タンパク質・ペプチド | 分子量: 3776.495 Da / 分子数: 1 / 由来タイプ: 合成 / 由来: (合成) Pandinus imperator (サソリ) / 参照: UniProt: P59868 |
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-タンパク質 , 3種, 12分子 GADJHBEKICFL
| #2: タンパク質 | 分子量: 565908.625 Da / 分子数: 4 / 由来タイプ: 天然 / 由来: (天然) ![]() #3: タンパク質 | 分子量: 11667.305 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: ![]() #4: タンパク質 | 分子量: 16620.402 Da / 分子数: 4 / Mutation: E32A, E68A, E105A, E141A / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: CALM1, CALM, CAM, CAM1 / 発現宿主: ![]() |
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-非ポリマー , 4種, 16分子 






| #5: 化合物 | ChemComp-CFF / #6: 化合物 | ChemComp-CA / #7: 化合物 | ChemComp-ATP / #8: 化合物 | ChemComp-ZN / |
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-詳細
| 研究の焦点であるリガンドがあるか | N |
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| Has protein modification | Y |
-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: RyR1 in complex with ImperaCalcin in presence of Caffeine/CaM1234/Calcium/ATP タイプ: COMPLEX / Entity ID: #1-#4 / 由来: MULTIPLE SOURCES | ||||||||||||||||
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| 分子量 | 値: 2.2 MDa / 実験値: YES | ||||||||||||||||
| 由来(天然) |
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| 緩衝液 | pH: 7.4 | ||||||||||||||||
| 試料 | 濃度: 10 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 |
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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): 3000 nm / 最小 デフォーカス(公称値): 1000 nm / Cs: 2.7 mm |
| 撮影 | 電子線照射量: 50 e/Å2 / 検出モード: COUNTING フィルム・検出器のモデル: FEI FALCON III (4k x 4k) |
| 画像スキャン | 横: 4096 / 縦: 4096 |
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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: C1 (非対称) | ||||||||||||||||||||||||||||||||||||||||
| 3次元再構成 | 解像度: 3.7 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 144529 / 対称性のタイプ: POINT | ||||||||||||||||||||||||||||||||||||||||
| 原子モデル構築 | プロトコル: AB INITIO MODEL | ||||||||||||||||||||||||||||||||||||||||
| 原子モデル構築 | PDB-ID: 6M2W Accession code: 6M2W / Source name: PDB / タイプ: experimental model |
ムービー
コントローラー
万見について




Homo sapiens (ヒト)
Pandinus imperator (サソリ)
カナダ, 2件
引用








PDBj























FIELD EMISSION GUN
