+データを開く
-基本情報
登録情報 | データベース: EMDB / ID: EMD-8290 | |||||||||
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タイトル | GluK2EM with LY466195 | |||||||||
マップデータ | GluK2EM with LY466195 | |||||||||
試料 |
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キーワード | GluK2EM with LY466195 / SIGNALING PROTEIN | |||||||||
機能・相同性 | 機能・相同性情報 mossy fiber rosette / detection of cold stimulus involved in thermoception / Activation of Na-permeable kainate receptors / kainate selective glutamate receptor complex / Activation of Ca-permeable Kainate Receptor / negative regulation of synaptic transmission, glutamatergic / regulation of short-term neuronal synaptic plasticity / inhibitory postsynaptic potential / glutamate receptor activity / ubiquitin conjugating enzyme binding ...mossy fiber rosette / detection of cold stimulus involved in thermoception / Activation of Na-permeable kainate receptors / kainate selective glutamate receptor complex / Activation of Ca-permeable Kainate Receptor / negative regulation of synaptic transmission, glutamatergic / regulation of short-term neuronal synaptic plasticity / inhibitory postsynaptic potential / glutamate receptor activity / ubiquitin conjugating enzyme binding / receptor clustering / modulation of excitatory postsynaptic potential / extracellularly glutamate-gated ion channel activity / regulation of JNK cascade / kainate selective glutamate receptor activity / ionotropic glutamate receptor complex / behavioral fear response / neuronal action potential / positive regulation of synaptic transmission / glutamate-gated receptor activity / glutamate-gated calcium ion channel activity / ligand-gated monoatomic ion channel activity involved in regulation of presynaptic membrane potential / presynaptic modulation of chemical synaptic transmission / dendrite cytoplasm / hippocampal mossy fiber to CA3 synapse / regulation of membrane potential / SNARE binding / excitatory postsynaptic potential / synaptic transmission, glutamatergic / transmitter-gated monoatomic ion channel activity involved in regulation of postsynaptic membrane potential / PDZ domain binding / postsynaptic density membrane / regulation of long-term neuronal synaptic plasticity / modulation of chemical synaptic transmission / terminal bouton / intracellular calcium ion homeostasis / positive regulation of neuron apoptotic process / presynaptic membrane / scaffold protein binding / chemical synaptic transmission / perikaryon / postsynaptic membrane / neuron apoptotic process / negative regulation of neuron apoptotic process / postsynaptic density / axon / neuronal cell body / glutamatergic synapse / dendrite / ubiquitin protein ligase binding / synapse / identical protein binding / membrane / plasma membrane 類似検索 - 分子機能 | |||||||||
生物種 | Rattus norvegicus (ドブネズミ) | |||||||||
手法 | 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度: 11.6 Å | |||||||||
データ登録者 | Meyerson JR / Chittori S | |||||||||
引用 | ジャーナル: Nature / 年: 2016 タイトル: Structural basis of kainate subtype glutamate receptor desensitization. 著者: Joel R Meyerson / Sagar Chittori / Alan Merk / Prashant Rao / Tae Hee Han / Mihaela Serpe / Mark L Mayer / Sriram Subramaniam / 要旨: Glutamate receptors are ligand-gated tetrameric ion channels that mediate synaptic transmission in the central nervous system. They are instrumental in vertebrate cognition and their dysfunction ...Glutamate receptors are ligand-gated tetrameric ion channels that mediate synaptic transmission in the central nervous system. They are instrumental in vertebrate cognition and their dysfunction underlies diverse diseases. In both the resting and desensitized states of AMPA and kainate receptor subtypes, the ion channels are closed, whereas the ligand-binding domains, which are physically coupled to the channels, adopt markedly different conformations. Without an atomic model for the desensitized state, it is not possible to address a central problem in receptor gating: how the resting and desensitized receptor states both display closed ion channels, although they have major differences in the quaternary structure of the ligand-binding domain. Here, by determining the structure of the kainate receptor GluK2 subtype in its desensitized state by cryo-electron microscopy (cryo-EM) at 3.8 Å resolution, we show that desensitization is characterized by the establishment of a ring-like structure in the ligand-binding domain layer of the receptor. Formation of this 'desensitization ring' is mediated by staggered helix contacts between adjacent subunits, which leads to a pseudo-four-fold symmetric arrangement of the ligand-binding domains, illustrating subtle changes in symmetry that are important for the gating mechanism. Disruption of the desensitization ring is probably the key switch that enables restoration of the receptor to its resting state, thereby completing the gating cycle. | |||||||||
履歴 |
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-構造の表示
ムービー |
ムービービューア |
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構造ビューア | EMマップ: SurfViewMolmilJmol/JSmol |
添付画像 |
-ダウンロードとリンク
-EMDBアーカイブ
マップデータ | emd_8290.map.gz | 96.1 MB | EMDBマップデータ形式 | |
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ヘッダ (付随情報) | emd-8290-v30.xml emd-8290.xml | 10.8 KB 10.8 KB | 表示 表示 | EMDBヘッダ |
画像 | emd_8290.png | 46.7 KB | ||
Filedesc metadata | emd-8290.cif.gz | 5.4 KB | ||
アーカイブディレクトリ | http://ftp.pdbj.org/pub/emdb/structures/EMD-8290 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-8290 | HTTPS FTP |
-検証レポート
文書・要旨 | emd_8290_validation.pdf.gz | 427.9 KB | 表示 | EMDB検証レポート |
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文書・詳細版 | emd_8290_full_validation.pdf.gz | 427.5 KB | 表示 | |
XML形式データ | emd_8290_validation.xml.gz | 6.4 KB | 表示 | |
CIF形式データ | emd_8290_validation.cif.gz | 7.2 KB | 表示 | |
アーカイブディレクトリ | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-8290 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-8290 | HTTPS FTP |
-関連構造データ
-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 |
-マップ
ファイル | ダウンロード / ファイル: emd_8290.map.gz / 形式: CCP4 / 大きさ: 103 MB / タイプ: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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注釈 | GluK2EM with LY466195 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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: 1.324 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
-試料の構成要素
-全体 : GluK2EM with LY466195
全体 | 名称: GluK2EM with LY466195 |
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要素 |
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-超分子 #1: GluK2EM with LY466195
超分子 | 名称: GluK2EM with LY466195 / タイプ: complex / ID: 1 / 親要素: 0 / 含まれる分子: #1 |
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由来(天然) | 生物種: Rattus norvegicus (ドブネズミ) |
-分子 #1: Glutamate receptor ionotropic, kainate 2
分子 | 名称: Glutamate receptor ionotropic, kainate 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: Rattus norvegicus (ドブネズミ) |
分子量 | 理論値: 85.526094 KDa |
組換発現 | 生物種: Spodoptera frugiperda (ツマジロクサヨトウ) |
配列 | 文字列: TTHVLRFGGI FEYVESGPMG AEELAFRFAV NTINRNRTLL PNTTLTYDTQ KINLYDSFEA SKKACDQLSL GVAAIFGPSH SSSANAVQS ICNALGVPHI QTRWKHQVSD NKDSFYVSLY PDFSSLSRAI LDLVQFFKWK TVTVVYDDST GLIRLQELIK A PSRYNLRL ...文字列: TTHVLRFGGI FEYVESGPMG AEELAFRFAV NTINRNRTLL PNTTLTYDTQ KINLYDSFEA SKKACDQLSL GVAAIFGPSH SSSANAVQS ICNALGVPHI QTRWKHQVSD NKDSFYVSLY PDFSSLSRAI LDLVQFFKWK TVTVVYDDST GLIRLQELIK A PSRYNLRL KIRQLPADTK DAKPLLKEMK RGKEFHVIFD CSHEMAAGIL KQALAMGMMT EYYHYIFTTL DLFALDVEPY RY SGVNMTG FRILNTENTQ VSSIIEKWSM ERLQAPPKPD SGLLDGFMTT DAALMYDAVH VVSVAVQQFP QMTVSSLQCN RHK PWRFGT RFMSLIKEAH WEGLTGRITF NKTNGLRTDF DLDVISLKEE GLEKIGTWDP ASGLNMTESQ KGKPANITDS LSNR SLIVT TILEEPYVLF KKSDKPLYGN DRFEGYCIDL LRELSTILGF TYEIRLVEDG KYGAQDDVNG QWNGMVRELI DHKAD LAVA PLTITYVREK VIDFSKPFMT LGISILYRKG TPIDSADDLA KQTKIEYGAV EDGSTMTFFK KSKISTYDKM WAFMSS RRQ SVLVKSSEEG IQRVLTSDYA LLMESTTIEF VTQRNCNLTQ IGGLIDSKGY GVGTPMGSPY RDKITIAILQ LQEEGKL HM MKEKWWRGNG CPEEESKEAS ALGVQNIGGI FIVLAAGLVL SVFVAVGEFL YKSKKNAQLE KRSFCSAMVE ELRMSLKC Q RRLKHKPQAP VIVKTEEVIN MHTFNDRRLP GKETMA UniProtKB: Glutamate receptor ionotropic, kainate 2, Glutamate receptor ionotropic, kainate 2 |
-分子 #2: (3S,4aR,6S,8aR)-6-{[(2S)-2-carboxy-4,4-difluoropyrrolidin-1-yl]me...
分子 | 名称: (3S,4aR,6S,8aR)-6-{[(2S)-2-carboxy-4,4-difluoropyrrolidin-1-yl]methyl}decahydroisoquinoline-3-carboxylic acid タイプ: ligand / ID: 2 / コピー数: 4 / 式: LY5 |
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分子量 | 理論値: 346.37 Da |
Chemical component information | ChemComp-LY5: |
-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 |
-試料調製
濃度 | 4.2 mg/mL |
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緩衝液 | pH: 8 |
凍結 | 凍結剤: ETHANE |
詳細 | GluK2 |
-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: SUPER-RESOLUTION / 平均電子線量: 45.0 e/Å2 |
電子線 | 加速電圧: 300 kV / 電子線源: FIELD EMISSION GUN |
電子光学系 | 照射モード: FLOOD BEAM / 撮影モード: BRIGHT FIELD |
実験機器 | モデル: Titan Krios / 画像提供: FEI Company |
-画像解析
初期モデル | モデルのタイプ: EMDB MAP |
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最終 再構成 | 解像度のタイプ: BY AUTHOR / 解像度: 11.6 Å / 解像度の算出法: FSC 0.143 CUT-OFF / ソフトウェア - 名称: RELION (ver. 1.3) / 使用した粒子像数: 31000 |
初期 角度割当 | タイプ: OTHER / ソフトウェア - 名称: RELION (ver. 1.3) |
最終 角度割当 | タイプ: OTHER / ソフトウェア - 名称: RELION (ver. 1.3) |