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基本情報
登録情報 | ![]() | |||||||||
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タイトル | Desensitized state 1 of the GluA2-gamma2 complex prepared at 37 degrees C | |||||||||
![]() | GluA2-gamma2 complex 37 degree C desensitized state 1 LBD-TMD map, locally filtered | |||||||||
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![]() | ligand gated ion channel / TRANSPORT PROTEIN | |||||||||
機能・相同性 | ![]() spine synapse / dendritic spine neck / dendritic spine head / Activation of AMPA receptors / perisynaptic space / AMPA glutamate receptor activity / ligand-gated monoatomic cation channel activity / Trafficking of GluR2-containing AMPA receptors / response to lithium ion / immunoglobulin binding ...spine synapse / dendritic spine neck / dendritic spine head / Activation of AMPA receptors / perisynaptic space / AMPA glutamate receptor activity / 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 / asymmetric synapse / regulation of receptor recycling / Unblocking of NMDA receptors, glutamate binding and activation / positive regulation of synaptic transmission / glutamate receptor binding / 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 / extracellular ligand-gated monoatomic ion channel activity / somatodendritic compartment / cellular response to brain-derived neurotrophic factor stimulus / glutamate-gated calcium ion channel activity / ligand-gated monoatomic ion channel activity involved in regulation of presynaptic membrane potential / dendrite cytoplasm / ionotropic glutamate receptor signaling pathway / SNARE binding / 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 / establishment of protein localization / modulation of chemical synaptic transmission / postsynaptic density membrane / terminal bouton / Schaffer collateral - CA1 synapse / cerebral cortex development / receptor internalization / synaptic vesicle membrane / synaptic vesicle / signaling receptor activity / presynapse / amyloid-beta binding / presynaptic membrane / growth cone / scaffold protein binding / dendritic spine / chemical synaptic transmission / perikaryon / postsynaptic membrane / postsynaptic density / neuron projection / axon / neuronal cell body / synapse / dendrite / 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: 4.17 Å | |||||||||
![]() | Kumar Mondal A / Twomey EC | |||||||||
資金援助 | ![]()
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![]() | ![]() タイトル: Glutamate gating of AMPA-subtype iGluRs at physiological temperatures. 著者: Anish Kumar Mondal / Elisa Carrillo / Vasanthi Jayaraman / Edward C Twomey / ![]() 要旨: Ionotropic glutamate receptors (iGluRs) are tetrameric ligand-gated ion channels that mediate most excitatory neurotransmission. iGluRs are gated by glutamate, where on glutamate binding, they open ...Ionotropic glutamate receptors (iGluRs) are tetrameric ligand-gated ion channels that mediate most excitatory neurotransmission. iGluRs are gated by glutamate, where on glutamate binding, they open their ion channels to enable cation influx into postsynaptic neurons, initiating signal transduction. The structural mechanics of how glutamate gating occurs in full-length iGluRs is not well understood. Here, using the α-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid subtype iGluR (AMPAR), we identify the glutamate-gating mechanism. AMPAR activation by glutamate is augmented at physiological temperatures. By preparing AMPARs for cryogenic-electron microscopy at these temperatures, we captured the glutamate-gating mechanism. Activation by glutamate initiates ion channel opening that involves all ion channel helices hinging away from the pore axis in a motif that is conserved across all iGluRs. Desensitization occurs when the local dimer pairs decouple and enables closure of the ion channel below through restoring the channel hinges and refolding the channel gate. Our findings define how glutamate gates iGluRs, provide foundations for therapeutic design and demonstrate how physiological temperatures can alter iGluR function. | |||||||||
履歴 |
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構造の表示
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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 | ![]() | 6.8 MB | ![]() | |
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ヘッダ (付随情報) | ![]() ![]() | 19.4 KB 19.4 KB | 表示 表示 | ![]() |
画像 | ![]() | 21.7 KB | ||
Filedesc metadata | ![]() | 5.9 KB | ||
その他 | ![]() ![]() ![]() | 162 MB 301 MB 301 MB | ||
アーカイブディレクトリ | ![]() ![]() | HTTPS FTP |
-検証レポート
文書・要旨 | ![]() | 776.6 KB | 表示 | ![]() |
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文書・詳細版 | ![]() | 776.2 KB | 表示 | |
XML形式データ | ![]() | 16.8 KB | 表示 | |
CIF形式データ | ![]() | 20.2 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 | ![]() 9mrlMC ![]() 9dhpC ![]() 9dhqC ![]() 9dhrC ![]() 9dhsC ![]() 9dhtC ![]() 9mrkC ![]() 9mrmC ![]() 9mrnC M: このマップから作成された原子モデル 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
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 | GluA2-gamma2 complex 37 degree C desensitized state 1 LBD-TMD map, locally filtered | ||||||||||||||||||||||||||||||||||||
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: 0.97 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
-追加マップ: GluA2-gamma2 complex 37 degree C desensitized state 1...
ファイル | emd_48558_additional_1.map | ||||||||||||
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注釈 | GluA2-gamma2 complex 37 degree C desensitized state 1 LBD-TMD unsharpened map | ||||||||||||
投影像・断面図 |
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密度ヒストグラム |
-ハーフマップ: GluA2-gamma2 complex 37 degree C desensitized state 1...
ファイル | emd_48558_half_map_1.map | ||||||||||||
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注釈 | GluA2-gamma2 complex 37 degree C desensitized state 1 LBD-TMD map half A | ||||||||||||
投影像・断面図 |
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密度ヒストグラム |
-ハーフマップ: GluA2-gamma2 complex 37 degree C desensitized state 1...
ファイル | emd_48558_half_map_2.map | ||||||||||||
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注釈 | GluA2-gamma2 complex 37 degree C desensitized state 1 LBD-TMD map half B | ||||||||||||
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 : glua2 tetramer bound to four molecules of TARPgamma2
全体 | 名称: glua2 tetramer bound to four molecules of TARPgamma2 |
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要素 |
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-超分子 #1: glua2 tetramer bound to four molecules of TARPgamma2
超分子 | 名称: glua2 tetramer bound to four molecules of TARPgamma2 タイプ: complex / ID: 1 / 親要素: 0 / 含まれる分子: #1-#2 |
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-分子 #1: Isoform Flip of Glutamate receptor 2
分子 | 名称: Isoform Flip of Glutamate receptor 2 / 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: 46.074305 KDa |
組換発現 | 生物種: ![]() |
配列 | 文字列: EQKTVVVTTI LESPYVMMKK NHEMLEGNER YEGYCVDLAA EIAKHCGFKY KLTIVGDGKY GARDADTKIW NGMVGELVYG KADIAIAPL TITLVREEVI DFSKPFMSLG ISIMIKKPQK SKPGVFSFLD PLAYEIWMCI VFAYIGVSVV LFLVSRFSPY S ESTNEFGI ...文字列: EQKTVVVTTI LESPYVMMKK NHEMLEGNER YEGYCVDLAA EIAKHCGFKY KLTIVGDGKY GARDADTKIW NGMVGELVYG KADIAIAPL TITLVREEVI DFSKPFMSLG ISIMIKKPQK SKPGVFSFLD PLAYEIWMCI VFAYIGVSVV LFLVSRFSPY S ESTNEFGI FNSLWFSLGA FMQQGCDISP RSLSGRIVGG VWWFFTLIII SSYTANLAAF LTVERMVSPI ESAEDLSKQT EI AYGTLDS GSTKEFFRRS KIAVFDKMWT YMRSAEPSVF VRTTAEGVAR VRKSKGKYAY LLESTMNEYI EQRKPCDTMK VGG NLDSKG YGIATPKGSS LGTPVNLAVL KLSEQGVLDK LKNKWWYDKG ECGAKDSGSK EKTSALSLSN VAGVFYILVG GLGL AMLVA LIEFCYKSRA UniProtKB: Glutamate receptor 2 |
-分子 #2: TARPgamma2
分子 | 名称: TARPgamma2 / タイプ: protein_or_peptide / ID: 2 / 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: 18.984268 KDa |
組換発現 | 生物種: ![]() |
配列 | 文字列: RGVQMLLTTV GAFAAFSLMT IAVGTDYWLY SRGVCKEVMT HSGLWRTCCL EGNFKGLCKQ IDHFAEYFLR AVRASSIFPI LSVILLFMG GLCIAASEFY KTRHNIILSA GIFFVSAGLS NIIGIIVYIS ANAGNSYSYG WSFYFGALSF IIAEMVGVLA V HMFIDRHK QLTG |
-分子 #3: GLUTAMIC ACID
分子 | 名称: GLUTAMIC ACID / タイプ: ligand / ID: 3 / 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: |
-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: 8 |
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凍結 | 凍結剤: ETHANE |
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電子顕微鏡法
顕微鏡 | TFS KRIOS |
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撮影 | フィルム・検出器のモデル: FEI FALCON IV (4k x 4k) 平均電子線量: 40.0 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): 2.5 µm / 最小 デフォーカス(公称値): 1.0 µm |
実験機器 | ![]() モデル: Titan Krios / 画像提供: FEI Company |