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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: 8dve | |||||||||
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| タイトル | RyR1 in presence of IpCa-T26E phosphomimetic and activating ligands | |||||||||
要素 |
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キーワード | MEMBRANE PROTEIN / Ryanodine receptor / Ion channel / Snake toxin / Calcin / Complex | |||||||||
| 機能・相同性 | 機能・相同性情報ATP-gated ion channel activity / 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 / terminal cisterna / ryanodine-sensitive calcium-release channel activity / ryanodine receptor complex ...ATP-gated ion channel activity / 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 / terminal cisterna / ryanodine-sensitive calcium-release channel activity / ryanodine receptor complex / CaM pathway / Cam-PDE 1 activation / Sodium/Calcium exchangers / release of sequestered calcium ion into cytosol by sarcoplasmic reticulum / response to redox state / Calmodulin induced events / ossification involved in bone maturation / Reduction of cytosolic Ca++ levels / Activation of Ca-permeable Kainate Receptor / CREB1 phosphorylation through the activation of CaMKII/CaMKK/CaMKIV cascasde / 'de novo' protein folding / negative regulation of heart rate / Loss of phosphorylation of MECP2 at T308 / CREB1 phosphorylation through the activation of Adenylate Cyclase / cellular response to caffeine / CaMK IV-mediated phosphorylation of CREB / PKA activation / negative regulation of high voltage-gated calcium channel activity / Glycogen breakdown (glycogenolysis) / CLEC7A (Dectin-1) induces NFAT activation / skin development / 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 / FK506 binding / negative regulation of calcium ion export across plasma membrane / regulation of cardiac muscle cell action potential / presynaptic endocytosis / Synthesis of IP3 and IP4 in the cytosol / organelle membrane / regulation of cell communication by electrical coupling involved in cardiac conduction / Phase 0 - rapid depolarisation / calcineurin-mediated signaling / Negative regulation of NMDA receptor-mediated neuronal transmission / Unblocking of NMDA receptors, glutamate binding and activation / intracellularly gated calcium channel activity / smooth endoplasmic reticulum / RHO GTPases activate PAKs / outflow tract morphogenesis / Ion transport by P-type ATPases / Uptake and function of anthrax toxins / regulation of ryanodine-sensitive calcium-release channel activity / Long-term potentiation / protein phosphatase activator activity / smooth muscle contraction / Calcineurin activates NFAT / Regulation of MECP2 expression and activity / DARPP-32 events / Smooth Muscle Contraction / detection of calcium ion / catalytic complex / regulation of cardiac muscle contraction / toxic substance binding / RHO GTPases activate IQGAPs / regulation of cardiac muscle contraction by regulation of the release of sequestered calcium ion / T cell proliferation / striated muscle contraction / voltage-gated calcium channel activity / cellular response to interferon-beta / Protein methylation / calcium channel inhibitor activity / Activation of AMPK downstream of NMDARs / presynaptic cytosol / skeletal muscle fiber development / regulation of release of sequestered calcium ion into cytosol by sarcoplasmic reticulum / Ion homeostasis / eNOS activation / titin binding / Tetrahydrobiopterin (BH4) synthesis, recycling, salvage and regulation / sperm midpiece / release of sequestered calcium ion into cytosol / regulation of calcium-mediated signaling / voltage-gated potassium channel complex / calcium channel complex / FCERI mediated Ca+2 mobilization / substantia nigra development / sarcoplasmic reticulum membrane / muscle contraction / regulation of heart rate / Ras activation upon Ca2+ influx through NMDA receptor / FCGR3A-mediated IL10 synthesis / cellular response to calcium ion / Antigen activates B Cell Receptor (BCR) leading to generation of second messengers / calyx of Held / sarcoplasmic reticulum / adenylate cyclase activator activity / protein maturation / sarcomere 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: 3.84 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. | |||||||||
| 履歴 |
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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 | 8dve.cif.gz | 2.6 MB | 表示 | PDBx/mmCIF形式 |
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| PDB形式 | pdb8dve.ent.gz | 表示 | PDB形式 | |
| PDBx/mmJSON形式 | 8dve.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 | 8dve_validation.pdf.gz | 2.1 MB | 表示 | wwPDB検証レポート |
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| 文書・詳細版 | 8dve_full_validation.pdf.gz | 2.2 MB | 表示 | |
| XML形式データ | 8dve_validation.xml.gz | 387.6 KB | 表示 | |
| CIF形式データ | 8dve_validation.cif.gz | 607.3 KB | 表示 | |
| アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/dv/8dve ftp://data.pdbj.org/pub/pdb/validation_reports/dv/8dve | HTTPS FTP |
-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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| 1 |
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要素
-タンパク質 , 3種, 12分子 DAGJEBHKFCIL
| #1: 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) ![]() #2: 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: ![]() #3: 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 






| #4: 化合物 | ChemComp-CFF / #5: 化合物 | ChemComp-CA / #6: 化合物 | ChemComp-ATP / #7: 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 |
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| 分子量 | 値: 2.2 MDa / 実験値: YES | ||||||||||||||||||||||||
| 由来(天然) |
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| 由来(組換発現) | 生物種: ![]() | ||||||||||||||||||||||||
| 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 | ||||||||||||||||||||||||
| 試料支持 | グリッドのサイズ: 300 divisions/in. / グリッドのタイプ: Quantifoil R2/2 | ||||||||||||||||||||||||
| 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 |
| 試料ホルダ | 凍結剤: NITROGEN 試料ホルダーモデル: FEI TITAN KRIOS AUTOGRID HOLDER |
| 撮影 | 電子線照射量: 50 e/Å2 フィルム・検出器のモデル: FEI FALCON IV (4k x 4k) |
| 電子光学装置 | エネルギーフィルター名称: TFS Selectris |
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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: 3.84 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 41834 / クラス平均像の数: 1 / 対称性のタイプ: POINT | ||||||||||||||||||||||||||||||||||||||||
| 原子モデル構築 | プロトコル: RIGID BODY FIT / 空間: REAL / Target criteria: Correlation coefficient | ||||||||||||||||||||||||||||||||||||||||
| 原子モデル構築 | PDB-ID: 6M2W PDB chain-ID: A / Accession code: 6M2W / Source name: PDB / タイプ: experimental model |
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万見について




Homo sapiens (ヒト)

カナダ, 2件
引用








PDBj























FIELD EMISSION GUN
