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基本情報
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タイトル | Human L-type voltage-gated calcium channel Cav1.2 in the presence of calciseptine, amlodipine and pinaverium at 2.9 Angstrom resolution | |||||||||
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![]() | Cav1.2 / Channels / Calcium Ion-Selective / TRANSPORT PROTEIN / MEMBRANE PROTEIN | |||||||||
機能・相同性 | ![]() positive regulation of high voltage-gated calcium channel activity / voltage-gated calcium channel activity involved in AV node cell action potential / voltage-gated calcium channel activity involved in cardiac muscle cell action potential / immune system development / positive regulation of adenylate cyclase activity / regulation of membrane repolarization during action potential / Presynaptic depolarization and calcium channel opening / membrane depolarization during atrial cardiac muscle cell action potential / calcium ion transmembrane transport via high voltage-gated calcium channel / Phase 2 - plateau phase ...positive regulation of high voltage-gated calcium channel activity / voltage-gated calcium channel activity involved in AV node cell action potential / voltage-gated calcium channel activity involved in cardiac muscle cell action potential / immune system development / positive regulation of adenylate cyclase activity / regulation of membrane repolarization during action potential / Presynaptic depolarization and calcium channel opening / membrane depolarization during atrial cardiac muscle cell action potential / calcium ion transmembrane transport via high voltage-gated calcium channel / Phase 2 - plateau phase / membrane depolarization during AV node cell action potential / high voltage-gated calcium channel activity / membrane depolarization during bundle of His cell action potential / cardiac conduction / L-type voltage-gated calcium channel complex / positive regulation of muscle contraction / membrane depolarization during cardiac muscle cell action potential / cell communication by electrical coupling involved in cardiac conduction / regulation of ventricular cardiac muscle cell action potential / regulation of ventricular cardiac muscle cell membrane repolarization / NCAM1 interactions / camera-type eye development / cardiac muscle cell action potential involved in contraction / embryonic forelimb morphogenesis / calcium ion transport into cytosol / regulation of calcium ion transmembrane transport via high voltage-gated calcium channel / voltage-gated calcium channel complex / Mechanical load activates signaling by PIEZO1 and integrins in osteocytes / Phase 0 - rapid depolarisation / alpha-actinin binding / regulation of heart rate by cardiac conduction / regulation of calcium ion transport / calcium ion import across plasma membrane / neuronal dense core vesicle / regulation of cardiac muscle contraction by regulation of the release of sequestered calcium ion / voltage-gated calcium channel activity / presynaptic active zone membrane / sarcoplasmic reticulum / protein localization to plasma membrane / calcium channel regulator activity / Regulation of insulin secretion / postsynaptic density membrane / calcium ion transmembrane transport / GABA-ergic synapse / Z disc / cellular response to amyloid-beta / Adrenaline,noradrenaline inhibits insulin secretion / calcium ion transport / T cell receptor signaling pathway / heart development / positive regulation of cytosolic calcium ion concentration / toxin activity / perikaryon / chemical synaptic transmission / calmodulin binding / postsynaptic density / cilium / synapse / dendrite / extracellular exosome / extracellular region / nucleoplasm / metal ion binding / membrane / plasma membrane / cytosol / cytoplasm 類似検索 - 分子機能 | |||||||||
生物種 | ![]() ![]() | |||||||||
手法 | 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度: 2.9 Å | |||||||||
![]() | Gao S / Yao X / Yan N | |||||||||
資金援助 | ![]()
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![]() | ![]() タイトル: Structural basis for human Ca1.2 inhibition by multiple drugs and the neurotoxin calciseptine. 著者: Shuai Gao / Xia Yao / Jiaofeng Chen / Gaoxingyu Huang / Xiao Fan / Lingfeng Xue / Zhangqiang Li / Tong Wu / Yupeng Zheng / Jian Huang / Xueqin Jin / Yan Wang / Zhifei Wang / Yong Yu / Lei Liu ...著者: Shuai Gao / Xia Yao / Jiaofeng Chen / Gaoxingyu Huang / Xiao Fan / Lingfeng Xue / Zhangqiang Li / Tong Wu / Yupeng Zheng / Jian Huang / Xueqin Jin / Yan Wang / Zhifei Wang / Yong Yu / Lei Liu / Xiaojing Pan / Chen Song / Nieng Yan / ![]() ![]() 要旨: Ca1.2 channels play crucial roles in various neuronal and physiological processes. Here, we present cryo-EM structures of human Ca1.2, both in its apo form and in complex with several drugs, as well ...Ca1.2 channels play crucial roles in various neuronal and physiological processes. Here, we present cryo-EM structures of human Ca1.2, both in its apo form and in complex with several drugs, as well as the peptide neurotoxin calciseptine. Most structures, apo or bound to calciseptine, amlodipine, or a combination of amiodarone and sofosbuvir, exhibit a consistent inactivated conformation with a sealed gate, three up voltage-sensing domains (VSDs), and a down VSD. Calciseptine sits on the shoulder of the pore domain, away from the permeation path. In contrast, when pinaverium bromide, an antispasmodic drug, is inserted into a cavity reminiscent of the IFM-binding site in Na channels, a series of structural changes occur, including upward movement of VSD coupled with dilation of the selectivity filter and its surrounding segments in repeat III. Meanwhile, S4-5 merges with S5 to become a single helix, resulting in a widened but still non-conductive intracellular gate. | |||||||||
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マップデータ | ![]() | 79.1 MB | ![]() | |
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ヘッダ (付随情報) | ![]() ![]() | 24.8 KB 24.8 KB | 表示 表示 | ![]() |
画像 | ![]() | 41.3 KB | ||
Filedesc metadata | ![]() | 9.4 KB | ||
その他 | ![]() ![]() | 77.7 MB 77.7 MB | ||
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文書・要旨 | ![]() | 1.1 MB | 表示 | ![]() |
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文書・詳細版 | ![]() | 1.1 MB | 表示 | |
XML形式データ | ![]() | 13.1 KB | 表示 | |
CIF形式データ | ![]() | 15.5 KB | 表示 | |
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「今月の分子」の関連する項目 |
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ファイル | ![]() | ||||||||||||||||||||
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ボクセルのサイズ | X=Y=Z: 1.114 Å | ||||||||||||||||||||
密度 |
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対称性 | 空間群: 1 | ||||||||||||||||||||
詳細 | EMDB XML:
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-添付データ
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試料の構成要素
+全体 : Cav1.2
+超分子 #1: Cav1.2
+分子 #1: Voltage-dependent L-type calcium channel subunit alpha-1C
+分子 #2: Voltage-dependent calcium channel subunit alpha-2/delta-1
+分子 #3: Voltage-dependent L-type calcium channel subunit beta-3
+分子 #4: Calciseptin
+分子 #8: CALCIUM ION
+分子 #9: CHOLESTEROL
+分子 #10: 2-acetamido-2-deoxy-beta-D-glucopyranose
+分子 #11: [(2R)-1-octadecanoyloxy-3-[oxidanyl-[(1R,2R,3S,4R,5R,6S)-2,3,6-tr...
+分子 #12: 1,2-Distearoyl-sn-glycerophosphoethanolamine
+分子 #13: amlodipine
-実験情報
-構造解析
手法 | クライオ電子顕微鏡法 |
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![]() | 単粒子再構成法 |
試料の集合状態 | particle |
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試料調製
緩衝液 | pH: 7.4 |
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凍結 | 凍結剤: ETHANE / チャンバー内湿度: 100 % / チャンバー内温度: 281 K |
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電子顕微鏡法
顕微鏡 | FEI TITAN KRIOS |
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撮影 | フィルム・検出器のモデル: GATAN K2 SUMMIT (4k x 4k) 平均電子線量: 50.0 e/Å2 |
電子線 | 加速電圧: 300 kV / 電子線源: ![]() |
電子光学系 | 照射モード: FLOOD BEAM / 撮影モード: BRIGHT FIELD / 最大 デフォーカス(公称値): 2.1 µm 最小 デフォーカス(公称値): 1.9000000000000001 µm |
実験機器 | ![]() モデル: Titan Krios / 画像提供: FEI Company |