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基本情報
登録情報 | データベース: PDB / ID: 8p3w | ||||||||||||
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タイトル | Homomeric GluA1 in tandem with TARP gamma-3, desensitized conformation 4 | ||||||||||||
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![]() | MEMBRANE PROTEIN / AMPAR / ion channels / neurotransmission | ||||||||||||
機能・相同性 | ![]() Cargo concentration in the ER / cellular response to amine stimulus / axonal spine / COPII-mediated vesicle transport / positive regulation of membrane potential / positive regulation of locomotion involved in locomotory behavior / cellular response to ammonium ion / response to sucrose / LGI-ADAM interactions / postsynaptic neurotransmitter receptor diffusion trapping ...Cargo concentration in the ER / cellular response to amine stimulus / axonal spine / COPII-mediated vesicle transport / positive regulation of membrane potential / positive regulation of locomotion involved in locomotory behavior / cellular response to ammonium ion / response to sucrose / LGI-ADAM interactions / postsynaptic neurotransmitter receptor diffusion trapping / proximal dendrite / neuron spine / myosin V binding / Trafficking of AMPA receptors / channel regulator activity / cellular response to L-glutamate / regulation of monoatomic ion transmembrane transport / regulation of AMPA receptor activity / response to arsenic-containing substance / conditioned place preference / cellular response to dsRNA / dendritic spine membrane / Synaptic adhesion-like molecules / long-term synaptic depression / beta-2 adrenergic receptor binding / cellular response to peptide hormone stimulus / response to morphine / neuronal cell body membrane / peptide hormone receptor binding / protein kinase A binding / neurotransmitter receptor localization to postsynaptic specialization membrane / response to psychosocial stress / spinal cord development / Activation of AMPA receptors / perisynaptic space / : / AMPA glutamate receptor activity / transmission of nerve impulse / immunoglobulin binding / Trafficking of GluR2-containing AMPA receptors / response to lithium ion / behavioral response to pain / AMPA glutamate receptor complex / ionotropic glutamate receptor complex / adenylate cyclase binding / excitatory synapse / positive regulation of excitatory postsynaptic potential / asymmetric synapse / regulation of receptor recycling / long-term memory / G-protein alpha-subunit binding / Unblocking of NMDA receptors, glutamate binding and activation / postsynaptic density, intracellular component / glutamate receptor binding / positive regulation of synaptic transmission / protein targeting / voltage-gated calcium channel activity / response to electrical stimulus / neuronal action potential / response to fungicide / glutamate-gated receptor activity / synapse assembly / ionotropic glutamate receptor binding / presynaptic active zone membrane / somatodendritic compartment / cellular response to brain-derived neurotrophic factor stimulus / glutamate-gated calcium ion channel activity / dendrite membrane / ligand-gated monoatomic ion channel activity involved in regulation of presynaptic membrane potential / positive regulation of synaptic transmission, glutamatergic / dendritic shaft / transmitter-gated monoatomic ion channel activity involved in regulation of postsynaptic membrane potential / synaptic transmission, glutamatergic / PDZ domain binding / cellular response to amino acid stimulus / response to cocaine / synaptic membrane / response to nutrient levels / modulation of chemical synaptic transmission / : / postsynaptic density membrane / neuromuscular junction / cellular response to growth factor stimulus / recycling endosome / cerebral cortex development / regulation of synaptic plasticity / small GTPase binding / Schaffer collateral - CA1 synapse / receptor internalization / response to peptide hormone / long-term synaptic potentiation / response to toxic substance / recycling endosome membrane / synaptic vesicle membrane / intracellular protein localization / synaptic vesicle / cell-cell junction / G-protein beta-subunit binding / response to estradiol / presynapse 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: 3.53 Å | ||||||||||||
![]() | Zhang, D. / Krieger, J.M. / Yamashita, K. / Greger, I. | ||||||||||||
資金援助 | ![]()
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![]() | ![]() タイトル: Structural mobility tunes signalling of the GluA1 AMPA glutamate receptor. 著者: Danyang Zhang / Josip Ivica / James M Krieger / Hinze Ho / Keitaro Yamashita / Imogen Stockwell / Rozbeh Baradaran / Ondrej Cais / Ingo H Greger / ![]() ![]() 要旨: AMPA glutamate receptors (AMPARs), the primary mediators of excitatory neurotransmission in the brain, are either GluA2 subunit-containing and thus Ca-impermeable, or GluA2-lacking and Ca-permeable. ...AMPA glutamate receptors (AMPARs), the primary mediators of excitatory neurotransmission in the brain, are either GluA2 subunit-containing and thus Ca-impermeable, or GluA2-lacking and Ca-permeable. Despite their prominent expression throughout interneurons and glia, their role in long-term potentiation and their involvement in a range of neuropathologies, structural information for GluA2-lacking receptors is currently absent. Here we determine and characterize cryo-electron microscopy structures of the GluA1 homotetramer, fully occupied with TARPγ3 auxiliary subunits (GluA1/γ3). The gating core of both resting and open-state GluA1/γ3 closely resembles GluA2-containing receptors. However, the sequence-diverse N-terminal domains (NTDs) give rise to a highly mobile assembly, enabling domain swapping and subunit re-alignments in the ligand-binding domain tier that are pronounced in desensitized states. These transitions underlie the unique kinetic properties of GluA1. A GluA2 mutant (F231A) increasing NTD dynamics phenocopies this behaviour, and exhibits reduced synaptic responses, reflecting the anchoring function of the AMPAR NTD at the synapse. Together, this work underscores how the subunit-diverse NTDs determine subunit arrangement, gating properties and ultimately synaptic signalling efficiency among AMPAR subtypes. | ||||||||||||
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構造の表示
構造ビューア | 分子: ![]() ![]() |
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PDBx/mmCIF形式 | ![]() | 494.4 KB | 表示 | ![]() |
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PDB形式 | ![]() | 372 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 | ![]() | 1.8 MB | 表示 | ![]() |
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文書・詳細版 | ![]() | 1.8 MB | 表示 | |
XML形式データ | ![]() | 78.4 KB | 表示 | |
CIF形式データ | ![]() | 113.3 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 | ![]() 17397MC ![]() 8c1pC ![]() 8c1qC ![]() 8c1rC ![]() 8c1sC ![]() 8c2hC ![]() 8c2iC ![]() 8p3qC ![]() 8p3sC ![]() 8p3tC ![]() 8p3uC ![]() 8p3vC ![]() 8p3xC ![]() 8p3yC ![]() 8p3zC ![]() 8pivC 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 , 2種, 8分子 ABCDEFGH
#1: タンパク質 | 分子量: 102661.930 Da / 分子数: 4 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() ![]() #2: タンパク質 | 分子量: 35435.332 Da / 分子数: 4 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() ![]() |
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-非ポリマー , 4種, 47分子 






#3: 化合物 | ChemComp-PLM / #4: 化合物 | ChemComp-OLC / ( #5: 化合物 | ChemComp-POV / ( #6: 水 | ChemComp-HOH / | |
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-詳細
研究の焦点であるリガンドがあるか | N |
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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: Homomeric GluA1 AMPA receptor in tandem with TARP gamma 3, plus 1mM quisqualate 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: 8 |
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: Titan Krios / 画像提供: FEI Company |
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顕微鏡 | モデル: TFS KRIOS |
電子銃 | 電子線源: ![]() |
電子レンズ | モード: BRIGHT FIELD / 最大 デフォーカス(公称値): 2400 nm / 最小 デフォーカス(公称値): 1200 nm |
撮影 | 電子線照射量: 50 e/Å2 フィルム・検出器のモデル: GATAN K3 BIOQUANTUM (6k x 4k) |
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解析
CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION |
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3次元再構成 | 解像度: 3.53 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 75478 / 対称性のタイプ: POINT |