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基本情報
登録情報 | データベース: PDB / ID: 7f57 | ||||||
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タイトル | Kainate-bound GluK2-1xNeto2 complex, at the desensitized state | ||||||
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![]() | MEMBRANE PROTEIN / Ionotropic glutamate receptors / Single-pass transmembrane proteins | ||||||
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 / 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 / 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 / neurotransmitter receptor localization to postsynaptic specialization membrane / regulation of neurotransmitter receptor localization to postsynaptic specialization membrane / 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 / ionotropic glutamate receptor binding / 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 / 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 / modulation of chemical synaptic transmission / regulation of long-term neuronal synaptic plasticity / postsynaptic density membrane / terminal bouton / 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 / ubiquitin protein ligase binding / dendrite / 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: 3.8 Å | ||||||
![]() | He, L.L. / Gao, Y.W. / Li, B. / Zhao, Y. | ||||||
資金援助 | ![]()
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![]() | ![]() タイトル: Kainate receptor modulation by NETO2. 著者: Lingli He / Jiahui Sun / Yiwei Gao / Bin Li / Yuhang Wang / Yanli Dong / Weidong An / Hang Li / Bei Yang / Yuhan Ge / Xuejun Cai Zhang / Yun Stone Shi / Yan Zhao / ![]() 要旨: Glutamate-gated kainate receptors are ubiquitous in the central nervous system of vertebrates, mediate synaptic transmission at the postsynapse and modulate transmitter release at the presynapse. In ...Glutamate-gated kainate receptors are ubiquitous in the central nervous system of vertebrates, mediate synaptic transmission at the postsynapse and modulate transmitter release at the presynapse. In the brain, the trafficking, gating kinetics and pharmacology of kainate receptors are tightly regulated by neuropilin and tolloid-like (NETO) proteins. Here we report cryo-electron microscopy structures of homotetrameric GluK2 in complex with NETO2 at inhibited and desensitized states, illustrating variable stoichiometry of GluK2-NETO2 complexes, with one or two NETO2 subunits associating with GluK2. We find that NETO2 accesses only two broad faces of kainate receptors, intermolecularly crosslinking the lower lobe of ATD, the upper lobe of LBD and the lower lobe of LBD, illustrating how NETO2 regulates receptor-gating kinetics. The transmembrane helix of NETO2 is positioned proximal to the selectivity filter and competes with the amphiphilic H1 helix after M4 for interaction with an intracellular cap domain formed by the M1-M2 linkers of the receptor, revealing how rectification is regulated by NETO2. | ||||||
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構造ビューア | 分子: ![]() ![]() |
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PDBx/mmCIF形式 | ![]() | 620.2 KB | 表示 | ![]() |
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PDB形式 | ![]() | 509 KB | 表示 | ![]() |
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集合体
登録構造単位 | ![]()
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要素
#1: タンパク質 | 分子量: 102475.961 Da / 分子数: 4 / 変異: F107L / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() ![]() #2: タンパク質 | | 分子量: 59413.652 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() ![]() #3: 多糖 | beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta- ...beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose #4: 糖 | ChemComp-NAG / 研究の焦点であるリガンドがあるか | N | Has protein modification | Y | |
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-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: Kainate-bound GluK2-1xNeto2 complex, at the desensitized state タイプ: COMPLEX / Entity ID: #1-#2 / 由来: RECOMBINANT |
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由来(天然) | 生物種: ![]() ![]() |
由来(組換発現) | 生物種: ![]() |
緩衝液 | pH: 7.4 |
試料 | 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES |
急速凍結 | 凍結剤: ETHANE |
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電子顕微鏡撮影
実験機器 | ![]() モデル: Talos Arctica / 画像提供: FEI Company |
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顕微鏡 | モデル: FEI TALOS 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: 50 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) |
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解析
ソフトウェア | 名称: PHENIX / バージョン: 1.18.2_3874: / 分類: 精密化 | ||||||||||||||||||||||||
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CTF補正 | タイプ: PHASE FLIPPING ONLY | ||||||||||||||||||||||||
3次元再構成 | 解像度: 3.8 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 92785 / 対称性のタイプ: POINT | ||||||||||||||||||||||||
拘束条件 |
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