+
データを開く
-
基本情報
登録情報 | データベース: PDB / ID: 7ks0 | ||||||
---|---|---|---|---|---|---|---|
タイトル | GluK2/K5 with 6-Cyano-7-nitroquinoxaline-2,3-dione (CNQX) | ||||||
![]() |
| ||||||
![]() | SIGNALING PROTEIN / Kainate receptor / ionotropic glutamate receptor / membrane protein / ligand-gated ion channel | ||||||
機能・相同性 | ![]() regulation of synaptic vesicle fusion to presynaptic active zone membrane / protein retention in ER lumen / 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 / inhibitory postsynaptic potential ...regulation of synaptic vesicle fusion to presynaptic active zone membrane / protein retention in ER lumen / 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 / inhibitory postsynaptic potential / glutamate receptor activity / ubiquitin conjugating enzyme binding / regulation of JNK cascade / receptor clustering / modulation of excitatory postsynaptic potential / kainate selective glutamate receptor activity / ionotropic glutamate receptor complex / extracellularly glutamate-gated ion channel activity / behavioral fear response / positive regulation of synaptic transmission / 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 / dendrite cytoplasm / presynaptic modulation of chemical synaptic transmission / SNARE binding / hippocampal mossy fiber to CA3 synapse / bioluminescence / regulation of membrane potential / excitatory postsynaptic potential / transmitter-gated monoatomic ion channel activity involved in regulation of postsynaptic membrane potential / generation of precursor metabolites and energy / synaptic transmission, glutamatergic / PDZ domain binding / establishment of localization in cell / regulation of long-term neuronal synaptic plasticity / modulation of chemical synaptic transmission / cellular response to glucose stimulus / postsynaptic density membrane / terminal bouton / SH3 domain binding / intracellular calcium ion homeostasis / positive regulation of neuron apoptotic process / presynaptic membrane / scaffold protein binding / neuron apoptotic process / chemical synaptic transmission / perikaryon / negative regulation of neuron apoptotic process / postsynaptic membrane / postsynaptic density / axon / neuronal cell body / synapse / dendrite / ubiquitin protein ligase binding / glutamatergic synapse / endoplasmic reticulum / 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: 5.3 Å | ||||||
![]() | Khanra, N. / Brown, P.M.G.E. / Perozzo, A.M. / Bowie, D. / Meyerson, J.R. | ||||||
![]() | ![]() タイトル: Architecture and structural dynamics of the heteromeric GluK2/K5 kainate receptor. 著者: Nandish Khanra / Patricia Mge Brown / Amanda M Perozzo / Derek Bowie / Joel R Meyerson / ![]() ![]() 要旨: Kainate receptors (KARs) are L-glutamate-gated ion channels that regulate synaptic transmission and modulate neuronal circuits. KARs have strict assembly rules and primarily function as heteromeric ...Kainate receptors (KARs) are L-glutamate-gated ion channels that regulate synaptic transmission and modulate neuronal circuits. KARs have strict assembly rules and primarily function as heteromeric receptors in the brain. A longstanding question is how KAR heteromer subunits organize and coordinate together to fulfill their signature physiological roles. Here we report structures of the GluK2/GluK5 heteromer in apo, antagonist-bound, and desensitized states. The receptor assembles with two copies of each subunit, ligand binding domains arranged as two heterodimers and GluK5 subunits proximal to the channel. Strikingly, during desensitization, GluK2, but not GluK5, subunits undergo major structural rearrangements to facilitate channel closure. We show how the large conformational differences between antagonist-bound and desensitized states are mediated by the linkers connecting the pore helices to the ligand binding domains. This work presents the first KAR heteromer structure, reveals how its subunits are organized, and resolves how the heteromer can accommodate functionally distinct closed channel structures. | ||||||
履歴 |
|
-
構造の表示
ムービー |
![]() |
---|---|
構造ビューア | 分子: ![]() ![]() |
-
ダウンロードとリンク
-
ダウンロード
PDBx/mmCIF形式 | ![]() | 484.9 KB | 表示 | ![]() |
---|---|---|---|---|
PDB形式 | ![]() | 356.5 KB | 表示 | ![]() |
PDBx/mmJSON形式 | ![]() | ツリー表示 | ![]() | |
その他 | ![]() |
-検証レポート
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 | ![]() 23014MC ![]() 7ks3C 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 ( |
---|---|
類似構造データ | |
電子顕微鏡画像生データ | ![]() Data size: 5.9 TB Data #1: GluK2/K5 with 6-Cyano-7-nitroquinoxaline-2,3-dione (CNQX) [micrographs - multiframe] Data #2: GluK2/K5 with 6-Cyano-7-nitroquinoxaline-2,3-dione (CNQX) [micrographs - multiframe] Data #3: GluK2/K5 with 6-Cyano-7-nitroquinoxaline-2,3-dione (CNQX) [micrographs - multiframe] Data #4: GluK2/K5 with 6-Cyano-7-nitroquinoxaline-2,3-dione (CNQX) [picked particles - single frame - processed] Data #5: GluK2/K5 with 6-Cyano-7-nitroquinoxaline-2,3-dione (CNQX) [picked particles - single frame - processed]) |
-
リンク
-
集合体
登録構造単位 | ![]()
|
---|---|
1 |
|
-
要素
#1: タンパク質 | 分子量: 123676.812 Da / 分子数: 2 / 由来タイプ: 組換発現 由来: (組換発現) ![]() ![]() ![]() ![]() 遺伝子: Grik5, GFP / 細胞株 (発現宿主): HEK293S GnTI- / 発現宿主: ![]() #2: タンパク質 | 分子量: 105981.617 Da / 分子数: 2 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() ![]() Has protein modification | Y | |
---|
-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: GluK2/K5 with 6-Cyano-7-nitroquinoxaline-2,3-dione (CNQX) タイプ: COMPLEX / Entity ID: all / 由来: RECOMBINANT | |||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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 | |||||||||||||||
緩衝液成分 |
| |||||||||||||||
試料 | 濃度: 3.7 mg/ml / 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES / 詳細: 1 mM 6-Cyano-7-nitroquinoxaline-2,3-dione | |||||||||||||||
試料支持 | 詳細: Functionalized with PEG-thiol / グリッドの材料: GOLD / グリッドのサイズ: 300 divisions/in. / グリッドのタイプ: UltrAuFoil R1.2/1.3 | |||||||||||||||
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: 295 K |
-
電子顕微鏡撮影
実験機器 | ![]() モデル: Talos Arctica / 画像提供: FEI Company |
---|---|
顕微鏡 | モデル: FEI TECNAI ARCTICA |
電子銃 | 電子線源: ![]() |
電子レンズ | モード: BRIGHT FIELD |
撮影 | 電子線照射量: 51.5 e/Å2 / フィルム・検出器のモデル: GATAN K3 (6k x 4k) |
-
解析
EMソフトウェア | 名称: Leginon / カテゴリ: 画像取得 |
---|---|
CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION |
3次元再構成 | 解像度: 5.3 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 1021916 詳細: Number of particles for ATD map: 540580 Number of particles for LBD-TMD map: 184945 対称性のタイプ: POINT |