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基本情報
登録情報 | データベース: EMDB / ID: EMD-7960 | ||||||||||||
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タイトル | Open state GluA2 in complex with STZ and blocked by IEM-1460, after micelle signal subtraction | ||||||||||||
![]() | TMD-directed refinement after micelle signal subtraction | ||||||||||||
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![]() | Ion channel / TRANSPORT PROTEIN | ||||||||||||
機能・相同性 | ![]() LGI-ADAM interactions / Presynaptic depolarization and calcium channel opening / eye blink reflex / positive regulation of protein localization to basolateral plasma membrane / neurotransmitter receptor transport, postsynaptic endosome to lysosome / neurotransmitter receptor internalization / cerebellar mossy fiber / regulation of AMPA receptor activity / Trafficking of AMPA receptors / postsynaptic neurotransmitter receptor diffusion trapping ...LGI-ADAM interactions / Presynaptic depolarization and calcium channel opening / eye blink reflex / positive regulation of protein localization to basolateral plasma membrane / neurotransmitter receptor transport, postsynaptic endosome to lysosome / neurotransmitter receptor internalization / cerebellar mossy fiber / regulation of AMPA receptor activity / Trafficking of AMPA receptors / postsynaptic neurotransmitter receptor diffusion trapping / membrane hyperpolarization / protein targeting to membrane / voltage-gated calcium channel complex / neurotransmitter receptor localization to postsynaptic specialization membrane / neuromuscular junction development / spine synapse / dendritic spine neck / dendritic spine head / Activation of AMPA receptors / channel regulator activity / perisynaptic space / AMPA glutamate receptor activity / transmission of nerve impulse / ligand-gated monoatomic cation channel activity / Trafficking of GluR2-containing AMPA receptors / response to lithium ion / immunoglobulin binding / AMPA glutamate receptor complex / kainate selective glutamate receptor activity / ionotropic glutamate receptor complex / cellular response to glycine / extracellularly glutamate-gated ion channel activity / membrane depolarization / asymmetric synapse / regulation of receptor recycling / Unblocking of NMDA receptors, glutamate binding and activation / positive regulation of synaptic transmission / glutamate receptor binding / voltage-gated calcium channel activity / glutamate-gated receptor activity / regulation of synaptic transmission, glutamatergic / response to fungicide / cytoskeletal protein binding / presynaptic active zone membrane / ionotropic glutamate receptor binding / dendrite membrane / glutamate-gated calcium ion channel activity / extracellular ligand-gated monoatomic ion channel activity / somatodendritic compartment / cellular response to brain-derived neurotrophic factor stimulus / ligand-gated monoatomic ion channel activity involved in regulation of presynaptic membrane potential / dendrite cytoplasm / ionotropic glutamate receptor signaling pathway / positive regulation of synaptic transmission, glutamatergic / SNARE binding / hippocampal mossy fiber to CA3 synapse / dendritic shaft / transmitter-gated monoatomic ion channel activity involved in regulation of postsynaptic membrane potential / synaptic transmission, glutamatergic / PDZ domain binding / protein tetramerization / synaptic membrane / modulation of chemical synaptic transmission / establishment of protein localization / postsynaptic density membrane / terminal bouton / Schaffer collateral - CA1 synapse / cerebral cortex development / receptor internalization / response to calcium ion / synaptic vesicle membrane / endocytic vesicle membrane / synaptic vesicle / signaling receptor activity / presynapse / amyloid-beta binding / presynaptic membrane / growth cone / scaffold protein binding / chemical synaptic transmission / perikaryon / postsynaptic membrane / dendritic spine / postsynaptic density / neuron projection / axon / neuronal cell body / dendrite / synapse / protein-containing complex binding / protein kinase binding / glutamatergic synapse / cell surface / endoplasmic reticulum / protein-containing complex / identical protein binding / membrane / plasma membrane 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: 4.4 Å | ||||||||||||
![]() | Twomey EC / Yelshanskaya MV | ||||||||||||
資金援助 | ![]()
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![]() | ![]() タイトル: Mechanisms of Channel Block in Calcium-Permeable AMPA Receptors. 著者: Edward C Twomey / Maria V Yelshanskaya / Alexander A Vassilevski / Alexander I Sobolevsky / ![]() ![]() 要旨: AMPA receptors mediate fast excitatory neurotransmission and are critical for CNS development and function. Calcium-permeable subsets of AMPA receptors are strongly implicated in acute and chronic ...AMPA receptors mediate fast excitatory neurotransmission and are critical for CNS development and function. Calcium-permeable subsets of AMPA receptors are strongly implicated in acute and chronic neurological disorders. However, despite the clinical importance, the therapeutic landscape for specifically targeting them, and not the calcium-impermeable AMPA receptors, remains largely undeveloped. To address this problem, we used cryo-electron microscopy and electrophysiology to investigate the mechanisms by which small-molecule blockers selectively inhibit ion channel conductance in calcium-permeable AMPA receptors. We determined the structures of calcium-permeable GluA2 AMPA receptor complexes with the auxiliary subunit stargazin bound to channel blockers, including the orb weaver spider toxin AgTx-636, the spider toxin analog NASPM, and the adamantane derivative IEM-1460. Our structures provide insights into the architecture of the blocker binding site and the mechanism of trapping, which are critical for development of small molecules that specifically target calcium-permeable AMPA receptors. | ||||||||||||
履歴 |
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構造の表示
ムービー |
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構造ビューア | EMマップ: ![]() ![]() ![]() |
添付画像 |
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ダウンロードとリンク
-EMDBアーカイブ
マップデータ | ![]() | 9.3 MB | ![]() | |
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ヘッダ (付随情報) | ![]() ![]() | 15.1 KB 15.1 KB | 表示 表示 | ![]() |
画像 | ![]() | 274.5 KB | ||
Filedesc metadata | ![]() | 6.4 KB | ||
その他 | ![]() | 6.1 MB | ||
アーカイブディレクトリ | ![]() ![]() | HTTPS FTP |
-検証レポート
文書・要旨 | ![]() | 386.1 KB | 表示 | ![]() |
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文書・詳細版 | ![]() | 385.6 KB | 表示 | |
XML形式データ | ![]() | 6.4 KB | 表示 | |
CIF形式データ | ![]() | 7.3 KB | 表示 | |
アーカイブディレクトリ | ![]() ![]() | HTTPS FTP |
-関連構造データ
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リンク
EMDBのページ | ![]() ![]() |
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「今月の分子」の関連する項目 |
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マップ
ファイル | ![]() | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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注釈 | TMD-directed refinement after micelle signal subtraction | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
投影像・断面図 | 画像のコントロール
画像は Spider により作成 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
ボクセルのサイズ | X=Y=Z: 1.08 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
密度 |
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対称性 | 空間群: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
詳細 | EMDB XML:
CCP4マップ ヘッダ情報:
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-添付データ
-追加マップ: Refinement of full map after micelle signal subtraction
ファイル | emd_7960_additional.map | ||||||||||||
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注釈 | Refinement of full map after micelle signal subtraction | ||||||||||||
投影像・断面図 |
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密度ヒストグラム |
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試料の構成要素
-全体 : Open state GluA2 in complex with STZ and blocked by IEM-1460, aft...
全体 | 名称: Open state GluA2 in complex with STZ and blocked by IEM-1460, after micelle signal subtraction |
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要素 |
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-超分子 #1: Open state GluA2 in complex with STZ and blocked by IEM-1460, aft...
超分子 | 名称: Open state GluA2 in complex with STZ and blocked by IEM-1460, after micelle signal subtraction タイプ: complex / ID: 1 / 親要素: 0 / 含まれる分子: #1 詳細: The full-map (non-TMD-directed) is included as a supplemental file |
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由来(天然) | 生物種: ![]() ![]() |
-分子 #1: Glutamate receptor 2,Voltage-dependent calcium channel gamma-2 subunit
分子 | 名称: Glutamate receptor 2,Voltage-dependent calcium channel gamma-2 subunit タイプ: protein_or_peptide / ID: 1 / コピー数: 4 / 光学異性体: LEVO |
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由来(天然) | 生物種: ![]() |
分子量 | 理論値: 115.178531 KDa |
組換発現 | 生物種: ![]() |
配列 | 文字列: NSIQIGGLFP RGADQEYSAF RVGMVQFSTS EFRLTPHIDN LEVANSFAVT NAFCSQFSRG VYAIFGFYDK KSVNTITSFC GTLHVSFIT PSFPTDGTHP FVIQMRPDLK GALLSLIEYY QWDKFAYLYD SDRGLSTLQA VLDSAAEKKW QVTAINVGNI N NDKKDETY ...文字列: NSIQIGGLFP RGADQEYSAF RVGMVQFSTS EFRLTPHIDN LEVANSFAVT NAFCSQFSRG VYAIFGFYDK KSVNTITSFC GTLHVSFIT PSFPTDGTHP FVIQMRPDLK GALLSLIEYY QWDKFAYLYD SDRGLSTLQA VLDSAAEKKW QVTAINVGNI N NDKKDETY RSLFQDLELK KERRVILDCE RDKVNDIVDQ VITIGKHVKG YHYIIANLGF TDGDLLKIQF GGAEVSGFQI VD YDDSLVS KFIERWSTLE EKEYPGAHTA TIKYTSALTY DAVQVMTEAF RNLRKQRIEI SRRGNAGDCL ANPAVPWGQG VEI ERALKQ VQVEGLSGNI KFDQNGKRIN YTINIMELKT NGPRKIGYWS EVDKMVLTED DTSGLEQKTV VVTTILESPY VMMK KNHEM LEGNERYEGY CVDLAAEIAK HCGFKYKLTI VGDGKYGARD ADTKIWNGMV GELVYGKADI AIAPLTITLV REEVI DFSK PFMSLGISIM IKKPQKSKPG VFSFLDPLAY EIWMCIVFAY IGVSVVLFLV SRFSPYEWHT EEFEDGRETQ SSESTN EFG IFNSLWFSLG AFMQQGCDIS PRSLSGRIVG GVWWFFTLII ISSYTANLAA FLTVERMVSP IESAEDLSKQ TEIAYGT LD SGSTKEFFRR SKIAVFDKMW TYMRSAEPSV FVRTTAEGVA RVRKSKGKYA YLLESTMNEY IEQRKPCDTM KVGGNLDS K GYGIATPKGS SLGTPVNLAV LKLSEQGVLD KLKNKWWYDK GECGAKDSGS KEKTSALSLS NVAGVFYILV GGLGLAMLV ALIEFCYKSR AEAKRMKGTG LFDRGVQMLL TTVGAFAAFS LMTIAVGTDY WLYSRGVCKT KSVSEDETSK KNEEVMTHSG LWRTCCLEG NFKGLCKQID HFPEDADYEA DTAEYFLRAV RASSIFPILS VILLFMGGLC IAASEFYKTR HNIILSAGIF F VSAGLSNI IGIIVYISAN AGDPSKSDSK KNSYSYGWSF YFGALSFIIA EMVGVLAVHM FIDRHKQLTG GAE UniProtKB: Glutamate receptor 2, Voltage-dependent calcium channel gamma-2 subunit |
-分子 #2: GLUTAMIC ACID
分子 | 名称: GLUTAMIC ACID / タイプ: ligand / ID: 2 / コピー数: 4 / 式: GLU |
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分子量 | 理論値: 147.129 Da |
Chemical component information | ![]() ChemComp-GLU: |
-分子 #3: CYCLOTHIAZIDE
分子 | 名称: CYCLOTHIAZIDE / タイプ: ligand / ID: 3 / コピー数: 4 / 式: CYZ |
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分子量 | 理論値: 389.878 Da |
Chemical component information |
-分子 #4: N,N,N-trimethyl-5-({[(3s,5s,7s)-tricyclo[3.3.1.1~3,7~]decan-1-yl]...
分子 | 名称: N,N,N-trimethyl-5-({[(3s,5s,7s)-tricyclo[3.3.1.1~3,7~]decan-1-yl]methyl}amino)pentan-1-aminium タイプ: ligand / ID: 4 / コピー数: 1 / 式: GZD |
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分子量 | 理論値: 293.51 Da |
Chemical component information | ![]() ChemComp-GZD: |
-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
濃度 | 4 mg/mL |
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緩衝液 | pH: 8 |
凍結 | 凍結剤: ETHANE / チャンバー内湿度: 100 % / チャンバー内温度: 295 K / 装置: FEI VITROBOT MARK IV |
詳細 | Open state GluA2 in complex with STZ and blocked by IEM-1460, after micelle signal subtraction |
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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) 検出モード: COUNTING / 平均露光時間: 8.0 sec. / 平均電子線量: 55.0 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: SPOT SCAN / 撮影モード: BRIGHT FIELD |
実験機器 | ![]() モデル: Titan Krios / 画像提供: FEI Company |
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画像解析
初期モデル | モデルのタイプ: PDB ENTRY PDBモデル - PDB ID: 詳細: Activated GluA2 complex bound to glutamate, cyclothiazide, and STZ in digitonin |
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最終 再構成 | 想定した対称性 - 点群: C2 (2回回転対称) / 解像度のタイプ: BY AUTHOR / 解像度: 4.4 Å / 解像度の算出法: FSC 0.143 CUT-OFF 詳細: Full map resolution (supplemental file) is 4.8 angstrom. 使用した粒子像数: 30849 |
初期 角度割当 | タイプ: ANGULAR RECONSTITUTION |
最終 角度割当 | タイプ: ANGULAR RECONSTITUTION |
-原子モデル構築 1
精密化 | 空間: REAL |
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得られたモデル | ![]() PDB-6dm0: |