+
データを開く
-
基本情報
登録情報 | データベース: PDB / ID: 9hpg | |||||||||
---|---|---|---|---|---|---|---|---|---|---|
タイトル | The NTD dimer and the interfacing LBD region of the AMPAR complex GluA3(R439G,R163I)- TARP gamma2 in the apo state. | |||||||||
![]() | Isoform Flip of Glutamate receptor 3,Voltage-dependent calcium channel gamma-2 subunit | |||||||||
![]() | MEMBRANE PROTEIN / AMPAR / ion channels / neurotransmission | |||||||||
機能・相同性 | ![]() Presynaptic depolarization and calcium channel opening / eye blink reflex / positive regulation of protein localization to basolateral plasma membrane / cerebellar mossy fiber / postsynaptic neurotransmitter receptor diffusion trapping / Trafficking of AMPA receptors / channel regulator activity / regulation of AMPA receptor activity / LGI-ADAM interactions / membrane hyperpolarization ...Presynaptic depolarization and calcium channel opening / eye blink reflex / positive regulation of protein localization to basolateral plasma membrane / cerebellar mossy fiber / postsynaptic neurotransmitter receptor diffusion trapping / Trafficking of AMPA receptors / channel regulator activity / regulation of AMPA receptor activity / LGI-ADAM interactions / membrane hyperpolarization / nervous system process / Synaptic adhesion-like molecules / protein targeting to membrane / voltage-gated calcium channel complex / protein heterotetramerization / neurotransmitter receptor localization to postsynaptic specialization membrane / neuromuscular junction development / parallel fiber to Purkinje cell synapse / Activation of AMPA receptors / AMPA glutamate receptor activity / transmission of nerve impulse / Trafficking of GluR2-containing AMPA receptors / response to lithium ion / AMPA glutamate receptor complex / ionotropic glutamate receptor complex / asymmetric synapse / membrane depolarization / regulation of receptor recycling / Unblocking of NMDA receptors, glutamate binding and activation / positive regulation of synaptic transmission, glutamatergic / synaptic cleft / regulation of postsynaptic membrane neurotransmitter receptor levels / voltage-gated calcium channel activity / response to fungicide / glutamate-gated receptor activity / glutamate-gated calcium ion channel activity / presynaptic active zone membrane / somatodendritic compartment / ionotropic glutamate receptor binding / ligand-gated monoatomic ion channel activity involved in regulation of presynaptic membrane potential / hippocampal mossy fiber to CA3 synapse / dendritic shaft / regulation of membrane potential / calcium channel regulator activity / transmitter-gated monoatomic ion channel activity involved in regulation of postsynaptic membrane potential / synaptic transmission, glutamatergic / response to calcium ion / postsynaptic density membrane / modulation of chemical synaptic transmission / Schaffer collateral - CA1 synapse / long-term synaptic potentiation / terminal bouton / amyloid-beta binding / presynaptic membrane / perikaryon / protein homotetramerization / dendritic spine / postsynaptic membrane / postsynaptic density / neuronal cell body / dendrite / glutamatergic synapse / cell surface / protein-containing complex / 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: 3.35 Å | |||||||||
![]() | Pokharna, A. / Krieger, J. / Greger, I. | |||||||||
資金援助 | ![]()
| |||||||||
![]() | ![]() タイトル: Architecture, dynamics and biogenesis of GluA3 AMPA glutamate receptors. 著者: Aditya Pokharna / Imogen Stockwell / Josip Ivica / Bishal Singh / Johannes Schwab / Carlos Vega-Gutiérrez / Beatriz Herguedas / Ondrej Cais / James M Krieger / Ingo H Greger / ![]() ![]() ![]() 要旨: AMPA-type glutamate receptors (AMPARs) mediate the majority of excitatory neurotransmission in the brain. Assembled from combinations of four core subunits, GluA1-4 and around 20 auxiliary subunits, ...AMPA-type glutamate receptors (AMPARs) mediate the majority of excitatory neurotransmission in the brain. Assembled from combinations of four core subunits, GluA1-4 and around 20 auxiliary subunits, their molecular diversity tunes information transfer and storage in a brain-circuit-specific manner. GluA3, a subtype strongly associated with disease, functions as both a fast-transmitting Ca-permeable AMPAR at sensory synapses, and as a Ca-impermeable receptor at cortical synapses. Here we present cryo-electron microscopy structures of the Ca-permeable GluA3 homomer, which substantially diverges from other AMPARs. The GluA3 extracellular domain tiers (N-terminal domain (NTD) and ligand-binding domain (LBD)) are closely coupled throughout gating states, creating interfaces that impact signalling and contain human disease-associated mutations. Central to this architecture is a stacking interaction between two arginine residues (Arg163) in the NTD dimer interface, trapping a unique NTD dimer conformation that enables close contacts with the LBD. Rupture of the Arg163 stack not only alters the structure and dynamics of the GluA3 extracellular region, but also increases receptor trafficking and the expression of GluA3 heteromers at the synapse. We further show that a mammalian-specific GluA3 trafficking checkpoint determines the conformational stability of the LBD tier. Thus, specific design features define communication and biogenesis of GluA3, offering a framework to examine this disease-associated glutamate receptor. | |||||||||
履歴 |
|
-
構造の表示
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 | ![]() | 192.9 KB | 表示 | ![]() |
---|---|---|---|---|
PDB形式 | ![]() | 134.4 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 | ![]() | 1.5 MB | 表示 | ![]() |
---|---|---|---|---|
文書・詳細版 | ![]() | 1.5 MB | 表示 | |
XML形式データ | ![]() | 47.2 KB | 表示 | |
CIF形式データ | ![]() | 68.7 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 | ![]() 52329MC ![]() 9hpcC ![]() 9hpdC ![]() 9hpeC ![]() 9hpfC ![]() 9hpkC ![]() 9qfhC 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 | 類似検索 - 機能・相同性 ![]() |
-
リンク
-
集合体
登録構造単位 | ![]()
|
---|---|
1 |
|
-
要素
#1: タンパク質 | 分子量: 132621.688 Da / 分子数: 2 / 変異: R439G,R163I / 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: homomeric AMPAR complex GluA3 in tandem with the auxiliary subunit TARP gamma2 タイプ: COMPLEX / Entity ID: all / 由来: RECOMBINANT |
---|---|
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 |
-
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: 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 / Cs: 2.7 mm |
撮影 | 電子線照射量: 40 e/Å2 フィルム・検出器のモデル: FEI FALCON IV (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: 3.35 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 151985 / 対称性のタイプ: POINT |