+
データを開く
-
基本情報
| 登録情報 | データベース: PDB / ID: 5kuh | ||||||
|---|---|---|---|---|---|---|---|
| タイトル | GluK2EM with LY466195 | ||||||
要素 | Glutamate receptor ionotropic, kainate 2 | ||||||
キーワード | SIGNALING PROTEIN / GluK2EM with LY466195 | ||||||
| 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 / regulation of short-term neuronal synaptic plasticity / glutamate receptor activity / negative regulation of synaptic transmission, glutamatergic / 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 / glutamate receptor activity / negative regulation of synaptic transmission, glutamatergic / 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 / dendrite / synapse / ubiquitin protein ligase binding / 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: 11.6 Å | ||||||
データ登録者 | Meyerson, J.R. / Chittori, S. / Merk, A. / Rao, P. / Han, T.H. / Serpe, M. / Mayer, M.L. / Subramaniam, 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 |
|
-
構造の表示
| ムービー |
ムービービューア |
|---|---|
| 構造ビューア | 分子: Molmil Jmol/JSmol |
-
ダウンロードとリンク
-
ダウンロード
| PDBx/mmCIF形式 | 5kuh.cif.gz | 348.1 KB | 表示 | PDBx/mmCIF形式 |
|---|---|---|---|---|
| PDB形式 | pdb5kuh.ent.gz | 231.5 KB | 表示 | PDB形式 |
| PDBx/mmJSON形式 | 5kuh.json.gz | ツリー表示 | PDBx/mmJSON形式 | |
| その他 | その他のダウンロード |
-検証レポート
| 文書・要旨 | 5kuh_validation.pdf.gz | 1 MB | 表示 | wwPDB検証レポート |
|---|---|---|---|---|
| 文書・詳細版 | 5kuh_full_validation.pdf.gz | 1 MB | 表示 | |
| XML形式データ | 5kuh_validation.xml.gz | 54.9 KB | 表示 | |
| CIF形式データ | 5kuh_validation.cif.gz | 90.4 KB | 表示 | |
| アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/ku/5kuh ftp://data.pdbj.org/pub/pdb/validation_reports/ku/5kuh | HTTPS FTP |
-関連構造データ
-
リンク
-
集合体
| 登録構造単位 | ![]()
|
|---|---|
| 1 |
|
-
要素
| #1: タンパク質 | 分子量: 85526.094 Da / 分子数: 4 / 断片: UNP residues 32-544,667-908 / 変異: T487A, S538A, S570N, L584F / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() 発現宿主: ![]() 参照: UniProt: P42260 #2: 化合物 | ChemComp-LY5 / ( |
|---|
-実験情報
-実験
| 実験 | 手法: 電子顕微鏡法 |
|---|---|
| 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 |
-
試料調製
| 構成要素 | 名称: GluK2EM with LY466195 / タイプ: COMPLEX / Entity ID: #1 / 由来: RECOMBINANT |
|---|---|
| 由来(天然) | 生物種: ![]() |
| 由来(組換発現) | 生物種: ![]() プラスミド: pFastBac1 |
| 緩衝液 | pH: 8 |
| 試料 | 濃度: 4.2 mg/ml / 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES / 詳細: GluK2 |
| 急速凍結 | 凍結剤: ETHANE |
-
電子顕微鏡撮影
| 実験機器 | ![]() モデル: Titan Krios / 画像提供: FEI Company |
|---|---|
| 顕微鏡 | モデル: FEI TITAN KRIOS |
| 電子銃 | 電子線源: FIELD EMISSION GUN / 加速電圧: 300 kV / 照射モード: FLOOD BEAM |
| 電子レンズ | モード: BRIGHT FIELD |
| 撮影 | 電子線照射量: 45 e/Å2 / 検出モード: SUPER-RESOLUTION フィルム・検出器のモデル: GATAN K2 SUMMIT (4k x 4k) |
-
解析
| EMソフトウェア |
| ||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||
| 3次元再構成 | 解像度: 11.6 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 31000 / 対称性のタイプ: POINT |
ムービー
コントローラー
万見について






引用
UCSF Chimera










PDBj





