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基本情報
登録情報 | データベース: PDB / ID: 8e5b | ||||||
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タイトル | Human L-type voltage-gated calcium channel Cav1.3 in the presence of Amiodarone and Sofosbuvir at 3.3 Angstrom resolution | ||||||
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![]() | TRANSPORT PROTEIN / Cav1.3 / Channels / Calcium Ion-Selective | ||||||
機能・相同性 | ![]() voltage-gated calcium channel activity involved SA node cell action potential / voltage-gated calcium channel activity involved in cardiac muscle cell action potential / positive regulation of high voltage-gated calcium channel activity / regulation of membrane repolarization during action potential / Presynaptic depolarization and calcium channel opening / regulation of potassium ion transmembrane transporter activity / membrane depolarization during SA node cell action potential / regulation of atrial cardiac muscle cell membrane repolarization / calcium ion transmembrane transport via high voltage-gated calcium channel / positive regulation of adenylate cyclase activity ...voltage-gated calcium channel activity involved SA node cell action potential / voltage-gated calcium channel activity involved in cardiac muscle cell action potential / positive regulation of high voltage-gated calcium channel activity / regulation of membrane repolarization during action potential / Presynaptic depolarization and calcium channel opening / regulation of potassium ion transmembrane transporter activity / membrane depolarization during SA node cell action potential / regulation of atrial cardiac muscle cell membrane repolarization / calcium ion transmembrane transport via high voltage-gated calcium channel / positive regulation of adenylate cyclase activity / membrane depolarization during bundle of His cell action potential / high voltage-gated calcium channel activity / L-type voltage-gated calcium channel complex / membrane depolarization during cardiac muscle cell action potential / NCAM1 interactions / positive regulation of calcium ion transport / cardiac muscle cell action potential involved in contraction / regulation of ventricular cardiac muscle cell membrane repolarization / regulation of potassium ion transmembrane transport / calcium ion import / calcium ion transport into cytosol / regulation of calcium ion transmembrane transport via high voltage-gated calcium channel / Sensory processing of sound by inner hair cells of the cochlea / voltage-gated calcium channel complex / ankyrin binding / neuronal dense core vesicle / calcium ion import across plasma membrane / alpha-actinin binding / regulation of heart rate by cardiac conduction / regulation of calcium ion transport / calcium channel regulator activity / voltage-gated calcium channel activity / presynaptic active zone membrane / sarcoplasmic reticulum / GABA-ergic synapse / protein localization to plasma membrane / Regulation of insulin secretion / sensory perception of sound / calcium channel activity / adenylate cyclase-modulating G protein-coupled receptor signaling pathway / calcium ion transmembrane transport / Z disc / Adrenaline,noradrenaline inhibits insulin secretion / cellular response to amyloid-beta / calcium ion transport / T cell receptor signaling pathway / chemical synaptic transmission / synapse / extracellular exosome / membrane / metal ion binding / plasma membrane / cytosol 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: 3.3 Å | ||||||
![]() | Gao, S. / Yao, X. / Yan, N. | ||||||
資金援助 | ![]()
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![]() | ![]() タイトル: Structural basis for the severe adverse interaction of sofosbuvir and amiodarone on L-type Ca channels. 著者: Xia Yao / Shuai Gao / Jixin Wang / Zhangqiang Li / Jian Huang / Yan Wang / Zhifei Wang / Jiaofeng Chen / Xiao Fan / Weipeng Wang / Xueqin Jin / Xiaojing Pan / Yong Yu / Armando Lagrutta / Nieng Yan / ![]() ![]() 要旨: Drug-drug interaction of the antiviral sofosbuvir and the antiarrhythmics amiodarone has been reported to cause fatal heartbeat slowing. Sofosbuvir and its analog, MNI-1, were reported to potentiate ...Drug-drug interaction of the antiviral sofosbuvir and the antiarrhythmics amiodarone has been reported to cause fatal heartbeat slowing. Sofosbuvir and its analog, MNI-1, were reported to potentiate the inhibition of cardiomyocyte calcium handling by amiodarone, which functions as a multi-channel antagonist, and implicate its inhibitory effect on L-type Ca channels, but the molecular mechanism has remained unclear. Here we present systematic cryo-EM structural analysis of Ca1.1 and Ca1.3 treated with amiodarone or sofosbuvir alone, or sofosbuvir/MNI-1 combined with amiodarone. Whereas amiodarone alone occupies the dihydropyridine binding site, sofosbuvir is not found in the channel when applied on its own. In the presence of amiodarone, sofosbuvir/MNI-1 is anchored in the central cavity of the pore domain through specific interaction with amiodarone and directly obstructs the ion permeation path. Our study reveals the molecular basis for the physical, pharmacodynamic interaction of two drugs on the scaffold of Ca channels. | ||||||
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構造の表示
構造ビューア | 分子: ![]() ![]() |
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PDBx/mmCIF形式 | ![]() | 482.8 KB | 表示 | ![]() |
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PDB形式 | ![]() | 373.6 KB | 表示 | ![]() |
PDBx/mmJSON形式 | ![]() | ツリー表示 | ![]() | |
その他 | ![]() |
-検証レポート
文書・要旨 | ![]() | 1.9 MB | 表示 | ![]() |
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文書・詳細版 | ![]() | 1.9 MB | 表示 | |
XML形式データ | ![]() | 75.2 KB | 表示 | |
CIF形式データ | ![]() | 111.7 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 | ![]() 27909MC ![]() 8e56C ![]() 8e57C ![]() 8e58C ![]() 8e59C ![]() 8e5aC 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 ![]() |
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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
-Voltage-dependent L-type calcium channel subunit ... , 2種, 2分子 AC
#1: タンパク質 | 分子量: 245417.734 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() |
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#3: 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) ![]() ![]() |
-タンパク質 , 1種, 1分子 D
#2: 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) ![]() ![]() |
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-糖 , 4種, 6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 | #10: 糖 | ChemComp-NAG / | |
-非ポリマー , 3種, 4分子 




#7: 化合物 | ChemComp-BBI / ( |
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#8: 化合物 | ChemComp-WG6 / |
#9: 化合物 |
-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 |
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試料調製
構成要素 | 名称: Cav1.3 / 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: ![]() |
由来(組換発現) | 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 / 湿度: 100 % / 凍結前の試料温度: 281 K |
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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 / 最大 デフォーカス(公称値): 2100 nm / 最小 デフォーカス(公称値): 1900 nm |
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
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: 3.3 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 69718 / 対称性のタイプ: POINT | ||||||||||||||||||||||||
拘束条件 |
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