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データを開く
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基本情報
| 登録情報 | ![]() | ||||||||||||||||||||||||||||||
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| タイトル | Heteromeric GluA1/A2-CNIH1 in the activated state, composite map of LBD-TMD | ||||||||||||||||||||||||||||||
マップデータ | GluA1A2-CNIH1 rr2b glu (composite map, LBD-TMD) | ||||||||||||||||||||||||||||||
試料 |
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キーワード | GluA1A2-CNIH2 heterotetramer active iGluR / MEMBRANE PROTEIN | ||||||||||||||||||||||||||||||
| 機能・相同性 | 機能・相同性情報Cargo concentration in the ER / axonal spine / positive regulation of locomotion involved in locomotory behavior / positive regulation of membrane potential / COPII-mediated vesicle transport / cellular response to ammonium ion / response to sucrose / myosin V binding / neuron spine / proximal dendrite ...Cargo concentration in the ER / axonal spine / positive regulation of locomotion involved in locomotory behavior / positive regulation of membrane potential / COPII-mediated vesicle transport / cellular response to ammonium ion / response to sucrose / myosin V binding / neuron spine / proximal dendrite / Cargo concentration in the ER / Trafficking of AMPA receptors / response to arsenic-containing substance / regulation of monoatomic ion transmembrane transport / cellular response to L-glutamate / cellular response to dsRNA / ligand-gated calcium channel activity / dendritic spine membrane / COPII-mediated vesicle transport / beta-2 adrenergic receptor binding / Synaptic adhesion-like molecules / long-term synaptic depression / cellular response to peptide hormone stimulus / spine synapse / dendritic spine neck / dendritic spine cytoplasm / cellular response to amine stimulus / dendritic spine head / peptide hormone receptor binding / response to psychosocial stress / response to morphine / Activation of AMPA receptors / spinal cord development / perisynaptic space / ligand-gated monoatomic cation channel activity / neuronal cell body membrane / protein kinase A binding / Trafficking of GluR2-containing AMPA receptors / response to lithium ion / AMPA glutamate receptor activity / AMPA glutamate receptor clustering / behavioral response to pain / kainate selective glutamate receptor activity / immunoglobulin binding / adenylate cyclase binding / asymmetric synapse / response to electrical stimulus / AMPA glutamate receptor complex / regulation of receptor recycling / extracellularly glutamate-gated ion channel activity / cellular response to glycine / ionotropic glutamate receptor complex / Unblocking of NMDA receptors, glutamate binding and activation / G-protein alpha-subunit binding / glutamate receptor binding / conditioned place preference / positive regulation of synaptic transmission / long-term memory / postsynaptic density, intracellular component / response to fungicide / regulation of synaptic transmission, glutamatergic / neuronal action potential / glutamate-gated receptor activity / extracellular ligand-gated monoatomic ion channel activity / vesicle-mediated transport / cytoskeletal protein binding / cellular response to brain-derived neurotrophic factor stimulus / regulation of long-term synaptic depression / endoplasmic reticulum-Golgi intermediate compartment membrane / somatodendritic compartment / glutamate-gated calcium ion channel activity / presynaptic active zone membrane / synapse assembly / excitatory synapse / ionotropic glutamate receptor signaling pathway / ionotropic glutamate receptor binding / dendrite membrane / ligand-gated monoatomic ion channel activity involved in regulation of presynaptic membrane potential / dendrite cytoplasm / positive regulation of excitatory postsynaptic potential / dendritic shaft / synaptic membrane / SNARE binding / response to cocaine / PDZ domain binding / neuromuscular junction / synaptic transmission, glutamatergic / establishment of protein localization / cellular response to amino acid stimulus / protein tetramerization / ER to Golgi transport vesicle membrane / transmitter-gated monoatomic ion channel activity involved in regulation of postsynaptic membrane potential / response to nutrient levels / cerebral cortex development / regulation of synaptic plasticity / receptor internalization / recycling endosome / postsynaptic density membrane / response to peptide hormone / cellular response to growth factor stimulus 類似検索 - 分子機能 | ||||||||||||||||||||||||||||||
| 生物種 | ![]() Homo sapiens (ヒト) | ||||||||||||||||||||||||||||||
| 手法 | 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度: 3.76 Å | ||||||||||||||||||||||||||||||
データ登録者 | Yen LY / Newton TP / Gangwar SP / Sobolevsky AI | ||||||||||||||||||||||||||||||
| 資金援助 | 米国, 9件
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引用 | ジャーナル: Nat Commun / 年: 2026タイトル: Auxiliary subunits reshape structural asymmetry and functional plasticity in heterotetrameric GluA1/A2 AMPA receptor core. 著者: Laura Y Yen / Thomas P Newton / Maria V Yelshanskaya / Muhammed Aktolun / Shanti Pal Gangwar / Rasmus P Clausen / Maria G Kurnikova / Alexander I Sobolevsky / ![]() 要旨: AMPA-subtype ionotropic glutamate receptors (AMPARs) mediate the fast component of excitatory neurotransmission. They govern synaptic plasticity that underlies learning and memory, while their ...AMPA-subtype ionotropic glutamate receptors (AMPARs) mediate the fast component of excitatory neurotransmission. They govern synaptic plasticity that underlies learning and memory, while their dysregulation is implicated in numerous neurological disorders. The functional diversity of AMPARs arises from variations in their subunit composition and also their association with auxiliary subunits. While multiple structures of homomeric AMPARs have been reported, structural information for the heteromeric core - particularly in the absence of auxiliary subunits, which would serve as a functional and structural baseline - has been limited. Here, we report cryo-electron microscopy structures of GluA1/A2, the most abundant AMPAR di-heteromer in the brain, in the closed, open, and desensitized states. Using molecular dynamics (MD) simulations and cross-correlating structural and functional information, we find that auxiliary subunits increase the diameter of channel pore, which corresponds to larger conductance. Likewise, we find that recovery from desensitization slows with greater disruption of two-fold rotational symmetry of the ligand-binding domain dimer in the desensitized state. Both receptor activation and desensitization vary with the type and number of associated auxiliary proteins. These structures offer a foundation for uncovering how auxiliary subunits reshape structural asymmetry and functional plasticity in heterotetrameric AMPARs. | ||||||||||||||||||||||||||||||
| 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 | emd_70920.map.gz | 244.2 MB | EMDBマップデータ形式 | |
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| ヘッダ (付随情報) | emd-70920-v30.xml emd-70920.xml | 22.5 KB 22.5 KB | 表示 表示 | EMDBヘッダ |
| 画像 | emd_70920.png | 137.5 KB | ||
| Filedesc metadata | emd-70920.cif.gz | 7.3 KB | ||
| アーカイブディレクトリ | http://ftp.pdbj.org/pub/emdb/structures/EMD-70920 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-70920 | HTTPS FTP |
-関連構造データ
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リンク
| EMDBのページ | EMDB (EBI/PDBe) / EMDataResource |
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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 | ダウンロード / ファイル: emd_70920.map.gz / 形式: CCP4 / 大きさ: 274.6 MB / タイプ: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||
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| 注釈 | GluA1A2-CNIH1 rr2b glu (composite map, LBD-TMD) | ||||||||||||||||||||||||||||||||||||
| 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: 0.83 Å | ||||||||||||||||||||||||||||||||||||
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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 : Heteromeric GluA1/A2-CNIH1 + rr2b + glu (LBD-TMD, composite map)
| 全体 | 名称: Heteromeric GluA1/A2-CNIH1 + rr2b + glu (LBD-TMD, composite map) |
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| 要素 |
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-超分子 #1: Heteromeric GluA1/A2-CNIH1 + rr2b + glu (LBD-TMD, composite map)
| 超分子 | 名称: Heteromeric GluA1/A2-CNIH1 + rr2b + glu (LBD-TMD, composite map) タイプ: complex / ID: 1 / 親要素: 0 / 含まれる分子: #1-#3 |
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| 由来(天然) | 生物種: ![]() |
| 分子量 | 理論値: 630 KDa |
-分子 #1: Isoform Flip of Glutamate receptor 1
| 分子 | 名称: Isoform Flip of Glutamate receptor 1 / タイプ: protein_or_peptide / ID: 1 / コピー数: 2 / 光学異性体: LEVO |
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| 由来(天然) | 生物種: ![]() |
| 分子量 | 理論値: 48.285328 KDa |
| 組換発現 | 生物種: Homo sapiens (ヒト) |
| 配列 | 文字列: SVQNRTYIVT TILEDPYVML KKNANQFEGN DRYEGYCVEL AAEIAKHVGY SYRLEIVSDG KYGARDPDTK AWNGMVGELV YGRADVAVA PLTITLVREE VIDFSKPFMS LGISIMIKKP QKSKPGVFSF LDPLAYEIWM CIVFAYIGVS VVLFLVSRFS P YEWHSEEF ...文字列: SVQNRTYIVT TILEDPYVML KKNANQFEGN DRYEGYCVEL AAEIAKHVGY SYRLEIVSDG KYGARDPDTK AWNGMVGELV YGRADVAVA PLTITLVREE VIDFSKPFMS LGISIMIKKP QKSKPGVFSF LDPLAYEIWM CIVFAYIGVS VVLFLVSRFS P YEWHSEEF EEGRDQTTSD QSNEFGIFNS LWFSLGAFMQ QGCDISPRSL SGRIVGGVWW FFTLIIISSY TANLAAFLTV ER MVSPIES AEDLAKQTEI AYGTLEAGST KEFFRRSKIA VFEKMWTYMK SAEPSVFVRT TEEGMIRVRK SKGKYAYLLE STM NEYIEQ RKPCDTMKVG GNLDSKGYGI ATPKGSALRG PVNLAVLKLS EQGVLDKLKS KWWYDKGECG SKDSGSKDKT SALS LSNVA GVFYILIGGL GLAMLVALIE FCYKSR UniProtKB: Glutamate receptor 1 |
-分子 #2: Isoform Flip of Glutamate receptor 2
| 分子 | 名称: Isoform Flip of Glutamate receptor 2 / タイプ: protein_or_peptide / ID: 2 / コピー数: 2 / 光学異性体: LEVO |
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| 由来(天然) | 生物種: ![]() |
| 分子量 | 理論値: 47.767008 KDa |
| 組換発現 | 生物種: Homo sapiens (ヒト) |
| 配列 | 文字列: QKTVVVTTIL ESPYVMMKKN HEMLEGNERY EGYCVDLAAE IAKHCGFKYK LTIVGDGKYG ARDADTKIWN GMVGELVYGK ADIAIAPLT ITLVREEVID FSKPFMSLGI SIMIKKPQKS KPGVFSFLDP LAYEIWMCIV FAYIGVSVVL FLVSRFSPYE W HTEEFEDG ...文字列: QKTVVVTTIL ESPYVMMKKN HEMLEGNERY EGYCVDLAAE IAKHCGFKYK LTIVGDGKYG ARDADTKIWN GMVGELVYGK ADIAIAPLT ITLVREEVID FSKPFMSLGI SIMIKKPQKS KPGVFSFLDP LAYEIWMCIV FAYIGVSVVL FLVSRFSPYE W HTEEFEDG RETQSSESTN EFGIFNSLWF SLGAFMRQGC DISPRSLSGR IVGGVWWFFT LIIISSYTAN LAAFLTVERM VS PIESAED LSKQTEIAYG TLDSGSTKEF FRRSKIAVFD KMWTYMRSAE PSVFVRTTAE GVARVRKSKG KYAYLLESTM NEY IEQRKP CDTMKVGGNL DSKGYGIATP KGSSLGTPVN LAVLKLSEQG VLDKLKNKWW YDKGECGAKD SGSKEKTSAL SLSN VAGVF YILVGGLGLA MLVALIEFCY KSR UniProtKB: Glutamate receptor 2 |
-分子 #3: Protein cornichon homolog 1
| 分子 | 名称: Protein cornichon homolog 1 / タイプ: protein_or_peptide / ID: 3 / コピー数: 4 / 光学異性体: LEVO |
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| 由来(天然) | 生物種: Homo sapiens (ヒト) |
| 分子量 | 理論値: 16.489604 KDa |
| 配列 | 文字列: AFTFAAFCYM LALLLTAALI FFAIWHIIAF DELKTDYKNP IDQCNTLNPL VLPEYLIHAF FCVMFLCAAE WLTLGLNMPL LAYHIWRYM SRPVMSGPGL YDPTTIMNAD ILAYCQKEGW CKLAFYLLAF FYYLYGMIYV LVS UniProtKB: Protein cornichon homolog 1 |
-分子 #4: GLUTAMIC ACID
| 分子 | 名称: GLUTAMIC ACID / タイプ: ligand / ID: 4 / 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 #5: (2S)-3-(hexadecanoyloxy)-2-[(9Z)-octadec-9-enoyloxy]propyl 2-(tri...
| 分子 | 名称: (2S)-3-(hexadecanoyloxy)-2-[(9Z)-octadec-9-enoyloxy]propyl 2-(trimethylammonio)ethyl phosphate タイプ: ligand / ID: 5 / コピー数: 16 / 式: POV |
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| 分子量 | 理論値: 760.076 Da |
| Chemical component information | ![]() ChemComp-POV: |
-分子 #6: N,N'-[biphenyl-4,4'-diyldi(2R)propane-2,1-diyl]dipropane-2-sulfonamide
| 分子 | 名称: N,N'-[biphenyl-4,4'-diyldi(2R)propane-2,1-diyl]dipropane-2-sulfonamide タイプ: ligand / ID: 6 / コピー数: 2 / 式: FWF |
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| 由来(天然) | 生物種: ![]() |
| 分子量 | 理論値: 480.684 Da |
| Chemical component information | ![]() ChemComp-FWF: |
-分子 #7: SODIUM ION
| 分子 | 名称: SODIUM ION / タイプ: ligand / ID: 7 / コピー数: 1 |
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| 分子量 | 理論値: 22.99 Da |
-実験情報
-構造解析
| 手法 | クライオ電子顕微鏡法 |
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解析 | 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 | 4.5 mg/mL | ||||||||||||||||||
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| 緩衝液 | pH: 8 構成要素:
詳細: 150 mM NaCl, 20 mM Tris-HCl pH 8.0, and 0.05% digitonin, 500 uM (R,R)-2b, 1 mM glutamate | ||||||||||||||||||
| グリッド | モデル: UltrAuFoil R1.2/1.3 / 材質: GOLD / メッシュ: 300 / 支持フィルム - 材質: GOLD / 支持フィルム - トポロジー: HOLEY / 支持フィルム - Film thickness: 500 / 前処理 - タイプ: GLOW DISCHARGE / 前処理 - 時間: 25 sec. / 前処理 - 雰囲気: AIR / 詳細: 15 mA | ||||||||||||||||||
| 凍結 | 凍結剤: ETHANE / チャンバー内湿度: 100 % / チャンバー内温度: 298 K / 装置: FEI VITROBOT MARK IV | ||||||||||||||||||
| 詳細 | The sample had compositional heterogeneity, with broken particles seen throughout. Otherwise, sample was monodisperse |
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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: GATAN K3 BIOQUANTUM (6k x 4k) 平均電子線量: 47.03 e/Å2 |
| 電子線 | 加速電圧: 300 kV / 電子線源: FIELD EMISSION GUN |
| 電子光学系 | C2レンズ絞り径: 100.0 µm / 照射モード: SPOT SCAN / 撮影モード: BRIGHT FIELD / Cs: 2.7 mm / 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 |
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コントローラー
万見について




キーワード
Homo sapiens (ヒト)
データ登録者
米国, 9件
引用




























Z (Sec.)
Y (Row.)
X (Col.)























解析
FIELD EMISSION GUN
