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データを開く
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基本情報
登録情報 | データベース: PDB / ID: 8gc5 | ||||||
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タイトル | Domoate-bound GluK2 kainate receptors in non-active conformation | ||||||
![]() | Glutamate receptor ionotropic, kainate 2 | ||||||
![]() | MEMBRANE PROTEIN / ion channel / glutamate kainate receptor 2 / homotetramer | ||||||
機能・相同性 | ![]() 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 / regulation of short-term neuronal synaptic plasticity / negative regulation of synaptic transmission, glutamatergic / glutamate receptor activity / ubiquitin conjugating enzyme binding / regulation of JNK cascade ...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 / regulation of short-term neuronal synaptic plasticity / negative regulation of synaptic transmission, glutamatergic / glutamate receptor activity / ubiquitin conjugating enzyme binding / regulation of JNK cascade / inhibitory postsynaptic potential / receptor clustering / kainate selective glutamate receptor activity / modulation of excitatory postsynaptic potential / extracellularly glutamate-gated ion channel activity / ionotropic glutamate receptor complex / positive regulation of synaptic transmission / behavioral fear response / neuronal action potential / 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 / SNARE binding / regulation of membrane potential / excitatory postsynaptic potential / transmitter-gated monoatomic ion channel activity involved in regulation of postsynaptic membrane potential / synaptic transmission, glutamatergic / PDZ domain binding / regulation of long-term neuronal synaptic plasticity / postsynaptic density membrane / modulation of chemical synaptic transmission / terminal bouton / intracellular calcium ion homeostasis / positive regulation of neuron apoptotic process / presynaptic membrane / neuron apoptotic process / scaffold protein binding / perikaryon / chemical synaptic transmission / negative regulation of neuron apoptotic process / postsynaptic membrane / postsynaptic density / axon / neuronal cell body / ubiquitin protein ligase binding / dendrite / synapse / glutamatergic synapse / identical protein binding / membrane / plasma membrane 類似検索 - 分子機能 | ||||||
生物種 | ![]() ![]() | ||||||
手法 | 電子顕微鏡法 / 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度: 3.93 Å | ||||||
![]() | Bogdanovic, N. / Tajima, N. | ||||||
資金援助 | ![]()
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![]() | ![]() タイトル: Structural basis of GluK2 kainate receptor activation by a partial agonist. 著者: Guadalupe Segura-Covarrubias / Changping Zhou / Nebojša Bogdanović / Lisa Zhang / Nami Tajima / ![]() 要旨: Kainate receptors (KARs) belong to the family of ionotropic glutamate receptors that regulate neurotransmitter release and excitatory synaptic transmission in the central nervous system. Despite ...Kainate receptors (KARs) belong to the family of ionotropic glutamate receptors that regulate neurotransmitter release and excitatory synaptic transmission in the central nervous system. Despite their critical roles in synaptic signaling and disease, the detailed gating mechanisms of KARs are not completely understood. Here we present cryo-electron microscopy structures of homomeric rat GluK2 KAR in an unliganded apo state and in complexes with a partial agonist, domoate. Partial agonist-bound GluK2 populates multiple conformations, including intermediate and desensitized states. Moreover, we demonstrate that the N-glycans at the amino-terminal domain-ligand binding domain (LBD) interface modulate receptor gating properties by interfering with cation binding at the LBD dimer interface. Together, these results provide insights into the unique gating mechanisms of KARs. | ||||||
履歴 |
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構造の表示
構造ビューア | 分子: ![]() ![]() |
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ダウンロードとリンク
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ダウンロード
PDBx/mmCIF形式 | ![]() | 644 KB | 表示 | ![]() |
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PDB形式 | ![]() | 440.7 KB | 表示 | ![]() |
PDBx/mmJSON形式 | ![]() | ツリー表示 | ![]() | |
その他 | ![]() |
-検証レポート
文書・要旨 | ![]() | 2.1 MB | 表示 | ![]() |
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文書・詳細版 | ![]() | 2.1 MB | 表示 | |
XML形式データ | ![]() | 95 KB | 表示 | |
CIF形式データ | ![]() | 143 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 | ![]() 29929MC M: このデータのモデリングに利用したマップデータ 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
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集合体
登録構造単位 | ![]()
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要素
-タンパク質 / 非ポリマー , 2種, 8分子 ABCD

#1: タンパク質 | 分子量: 98883.469 Da / 分子数: 4 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() 発現宿主: ![]() ![]() 参照: UniProt: P42260 #6: 化合物 | ChemComp-DOQ / ( |
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-糖 , 5種, 15分子 


#2: 多糖 | alpha-D-mannopyranose-(1-3)-[alpha-D-mannopyranose-(1-6)]beta-D-mannopyranose-(1-4)-2-acetamido-2- ...alpha-D-mannopyranose-(1-3)-[alpha-D-mannopyranose-(1-6)]beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose #3: 多糖 | #4: 多糖 | alpha-D-mannopyranose-(1-3)-beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1- ...alpha-D-mannopyranose-(1-3)-beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose | #5: 糖 | ChemComp-NAG / #7: 糖 | ChemComp-MAN / | |
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-詳細
研究の焦点であるリガンドがあるか | Y |
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Has protein modification | Y |
-実験情報
-実験
実験 | 手法: 電子顕微鏡法 |
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EM実験 | 試料の集合状態: PARTICLE / 3次元再構成法: 単粒子再構成法 |
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試料調製
構成要素 | 名称: Homotetrameric GluK2 bound with DOQ state 4 / タイプ: COMPLEX 詳細: Tetramer isolated and dyalised extensively. The DOQ was applied prior to grid freezing. Entity ID: #1 / 由来: RECOMBINANT |
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分子量 | 実験値: NO |
由来(天然) | 生物種: ![]() ![]() |
由来(組換発現) | 生物種: ![]() ![]() |
緩衝液 | pH: 8 / 詳細: 50 mM Tris/HCl 150 mM NaCl 1mM DDM pH 8.0 |
緩衝液成分 | 濃度: 150 mmol / 名称: sodium chloride / 式: NaCl |
試料 | 濃度: 3.5 mg/ml / 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES 詳細: The sample was isolated from SEC and concentrated. Monodispersity of the final sample determined by the analytical HPLC, Superose 6 increase column |
急速凍結 | 装置: FEI VITROBOT MARK IV / 凍結剤: ETHANE / 湿度: 100 % / 凍結前の試料温度: 277.15 K |
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電子顕微鏡撮影
実験機器 | ![]() モデル: Titan Krios / 画像提供: FEI Company |
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顕微鏡 | モデル: FEI TITAN KRIOS |
電子銃 | 電子線源: ![]() |
電子レンズ | モード: OTHER / 倍率(公称値): 81000 X / 最大 デフォーカス(公称値): 2500 nm / 最小 デフォーカス(公称値): 1000 nm / Cs: 2.7 mm |
試料ホルダ | 凍結剤: NITROGEN 試料ホルダーモデル: FEI TITAN KRIOS AUTOGRID HOLDER |
撮影 | 電子線照射量: 60 e/Å2 フィルム・検出器のモデル: GATAN K3 BIOQUANTUM (6k x 4k) 撮影したグリッド数: 1 / 実像数: 12486 |
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解析
ソフトウェア |
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EMソフトウェア |
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CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||||||||||||||||||||||||||||
粒子像の選択 | 選択した粒子像数: 2481151 詳細: Initially picked particles that are later classified in several rounds of 2D and 3D classifications. The number of final classes for this dataset is 4 of which this state represents "class 2" ...詳細: Initially picked particles that are later classified in several rounds of 2D and 3D classifications. The number of final classes for this dataset is 4 of which this state represents "class 2" and contains 100389 as the final number of particles. | ||||||||||||||||||||||||||||||||||||||||||||||||||
対称性 | 点対称性: C1 (非対称) | ||||||||||||||||||||||||||||||||||||||||||||||||||
3次元再構成 | 解像度: 3.93 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 100389 / アルゴリズム: FOURIER SPACE / クラス平均像の数: 1 / 対称性のタイプ: POINT | ||||||||||||||||||||||||||||||||||||||||||||||||||
原子モデル構築 | B value: 70 / プロトコル: RIGID BODY FIT / 空間: REAL / Target criteria: 0.85 | ||||||||||||||||||||||||||||||||||||||||||||||||||
精密化 | 交差検証法: NONE 立体化学のターゲット値: GeoStd + Monomer Library + CDL v1.2 | ||||||||||||||||||||||||||||||||||||||||||||||||||
原子変位パラメータ | Biso mean: 198.1 Å2 | ||||||||||||||||||||||||||||||||||||||||||||||||||
拘束条件 |
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