+データを開く
-基本情報
登録情報 | データベース: PDB / ID: 7miy | ||||||
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タイトル | Human N-type voltage-gated calcium channel Cav2.2 at 3.1 Angstrom resolution | ||||||
要素 | (Voltage-dependent ...) x 3 | ||||||
キーワード | TRANSPORT PROTEIN / Cav2.2 / Channels / Calcium Ion-Selective | ||||||
機能・相同性 | 機能・相同性情報 regulation of membrane repolarization during action potential / Presynaptic depolarization and calcium channel opening / positive regulation of high voltage-gated calcium channel activity / calcium ion transmembrane transport via high voltage-gated calcium channel / membrane depolarization during bundle of His cell action potential / high voltage-gated calcium channel activity / L-type voltage-gated calcium channel complex / cardiac muscle cell action potential involved in contraction / NCAM1 interactions / regulation of ventricular cardiac muscle cell membrane repolarization ...regulation of membrane repolarization during action potential / Presynaptic depolarization and calcium channel opening / positive regulation of high voltage-gated calcium channel activity / calcium ion transmembrane transport via high voltage-gated calcium channel / membrane depolarization during bundle of His cell action potential / high voltage-gated calcium channel activity / L-type voltage-gated calcium channel complex / cardiac muscle cell action potential involved in contraction / NCAM1 interactions / regulation of ventricular cardiac muscle cell membrane repolarization / calcium ion transport into cytosol / regulation of calcium ion transmembrane transport via high voltage-gated calcium channel / voltage-gated calcium channel complex / neuromuscular junction development / calcium ion import across plasma membrane / neuronal dense core vesicle / regulation of heart rate by cardiac conduction / response to amyloid-beta / regulation of calcium ion transport / calcium channel regulator activity / voltage-gated calcium channel activity / sarcoplasmic reticulum / protein localization to plasma membrane / Regulation of insulin secretion / modulation of chemical synaptic transmission / Adrenaline,noradrenaline inhibits insulin secretion / cellular response to amyloid-beta / calcium ion transport / T cell receptor signaling pathway / amyloid-beta binding / chemical synaptic transmission / neuronal cell body / calcium ion binding / synapse / extracellular exosome / ATP binding / membrane / metal ion binding / plasma membrane / cytosol 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: 3.1 Å | ||||||
データ登録者 | Yan, N. / Gao, S. / Yao, X. | ||||||
資金援助 | 米国, 1件
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引用 | ジャーナル: Nature / 年: 2021 タイトル: Structure of human Ca2.2 channel blocked by the painkiller ziconotide. 著者: Shuai Gao / Xia Yao / Nieng Yan / 要旨: The neuronal-type (N-type) voltage-gated calcium (Ca) channels, which are designated Ca2.2, have an important role in the release of neurotransmitters. Ziconotide is a Ca2.2-specific peptide pore ...The neuronal-type (N-type) voltage-gated calcium (Ca) channels, which are designated Ca2.2, have an important role in the release of neurotransmitters. Ziconotide is a Ca2.2-specific peptide pore blocker that has been clinically used for treating intractable pain. Here we present cryo-electron microscopy structures of human Ca2.2 (comprising the core α1 and the ancillary α2δ-1 and β3 subunits) in the presence or absence of ziconotide. Ziconotide is thoroughly coordinated by helices P1 and P2, which support the selectivity filter, and the extracellular loops (ECLs) in repeats II, III and IV of α1. To accommodate ziconotide, the ECL of repeat III and α2δ-1 have to tilt upward concertedly. Three of the voltage-sensing domains (VSDs) are in a depolarized state, whereas the VSD of repeat II exhibits a down conformation that is stabilized by Ca2-unique intracellular segments and a phosphatidylinositol 4,5-bisphosphate molecule. Our studies reveal the molecular basis for Ca2.2-specific pore blocking by ziconotide and establish the framework for investigating electromechanical coupling in Ca channels. | ||||||
履歴 |
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-構造の表示
ムービー |
ムービービューア |
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構造ビューア | 分子: MolmilJmol/JSmol |
-ダウンロードとリンク
-ダウンロード
PDBx/mmCIF形式 | 7miy.cif.gz | 514.7 KB | 表示 | PDBx/mmCIF形式 |
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PDB形式 | pdb7miy.ent.gz | 398.9 KB | 表示 | PDB形式 |
PDBx/mmJSON形式 | 7miy.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 | 7miy_validation.pdf.gz | 1.8 MB | 表示 | wwPDB検証レポート |
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文書・詳細版 | 7miy_full_validation.pdf.gz | 1.8 MB | 表示 | |
XML形式データ | 7miy_validation.xml.gz | 78.1 KB | 表示 | |
CIF形式データ | 7miy_validation.cif.gz | 113.8 KB | 表示 | |
アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/mi/7miy ftp://data.pdbj.org/pub/pdb/validation_reports/mi/7miy | HTTPS FTP |
-関連構造データ
-リンク
-集合体
登録構造単位 |
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1 |
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-要素
-Voltage-dependent ... , 3種, 3分子 ACD
#1: タンパク質 | 分子量: 262831.781 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: CACNA1B, CACH5, CACNL1A5 / 発現宿主: Homo sapiens (ヒト) / 参照: UniProt: Q00975 |
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#2: タンパク質 | 分子量: 54607.852 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: CACNB3, CACNLB3 / 発現宿主: Homo sapiens (ヒト) / 参照: UniProt: P54284 |
#3: タンパク質 | 分子量: 124692.469 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: CACNA2D1, CACNL2A, CCHL2A, MHS3 / 発現宿主: Homo sapiens (ヒト) / 参照: UniProt: P54289 |
-糖 , 4種, 8分子
#4: 多糖 | 2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2- ...2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose | ||||
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#5: 多糖 | #6: 多糖 | 2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2- ...2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose | #7: 糖 | |
-非ポリマー , 5種, 12分子
#8: 化合物 | #9: 化合物 | #10: 化合物 | ChemComp-CLR / #11: 化合物 | #12: 化合物 | ChemComp-PT5 / [( | |
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-詳細
研究の焦点であるリガンドがあるか | Y |
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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 |
-試料調製
構成要素 | 名称: Cav2.2 / タイプ: COMPLEX / Entity ID: #1-#3 / 由来: RECOMBINANT |
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分子量 | 実験値: NO |
由来(天然) | 生物種: Homo sapiens (ヒト) |
由来(組換発現) | 生物種: Homo sapiens (ヒト) |
緩衝液 | pH: 7.4 |
試料 | 濃度: 20 mg/ml / 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES / 詳細: Cav2.2 |
急速凍結 | 装置: FEI VITROBOT MARK IV / 凍結剤: ETHANE / 湿度: 100 % / 凍結前の試料温度: 281 K / 詳細: blot for 6 seconds before plunging |
-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: 50 e/Å2 フィルム・検出器のモデル: GATAN K2 SUMMIT (4k x 4k) |
-解析
ソフトウェア | 名称: PHENIX / バージョン: 1.19.2_4158: / 分類: 精密化 | ||||||||||||||||||||||||
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CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||
3次元再構成 | 解像度: 3.1 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 56615 / 対称性のタイプ: POINT | ||||||||||||||||||||||||
拘束条件 |
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