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基本情報
登録情報 | ![]() | |||||||||
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タイトル | The composite map of of the AMPAR complex GluA3- TARP gamma2 in the apo state. | |||||||||
![]() | Composite map of the AMPAR complex GluA3-TARP gamma 2 in the apo state. | |||||||||
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![]() | AMPAR / ion channels / neurotransmission / MEMBRANE PROTEIN | |||||||||
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 / regulation of AMPA receptor activity / channel regulator activity / Trafficking of AMPA receptors / 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 / regulation of AMPA receptor activity / channel regulator activity / Trafficking of AMPA receptors / 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 / response to lithium ion / Trafficking of GluR2-containing AMPA receptors / AMPA glutamate receptor complex / asymmetric synapse / ionotropic glutamate receptor complex / regulation of receptor recycling / membrane depolarization / Unblocking of NMDA receptors, glutamate binding and activation / synaptic cleft / positive regulation of synaptic transmission, glutamatergic / 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 | 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度: 2.9 Å | |||||||||
![]() | Pokharna A / Krieger J / Greger I / Ho H / Yamashita K / Cais O / Singh B | |||||||||
資金援助 | ![]()
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![]() | ![]() 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. | |||||||||
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構造の表示
添付画像 |
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マップデータ | ![]() | 327.6 MB | ![]() | |
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ヘッダ (付随情報) | ![]() ![]() | 20 KB 20 KB | 表示 表示 | ![]() |
画像 | ![]() | 46.9 KB | ||
Filedesc metadata | ![]() | 6.8 KB | ||
その他 | ![]() | 249.3 MB | ||
アーカイブディレクトリ | ![]() ![]() | HTTPS FTP |
-検証レポート
文書・要旨 | ![]() | 460.8 KB | 表示 | ![]() |
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文書・詳細版 | ![]() | 460.4 KB | 表示 | |
XML形式データ | ![]() | 8.2 KB | 表示 | |
CIF形式データ | ![]() | 9.6 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 | ![]() 9qfhMC ![]() 9hpcC ![]() 9hpdC ![]() 9hpeC ![]() 9hpfC ![]() 9hpgC ![]() 9hpkC ![]() 53782 C: 同じ文献を引用 ( M: このマップから作成された原子モデル |
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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
EMDBのページ | ![]() ![]() |
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「今月の分子」の関連する項目 |
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マップ
ファイル | ![]() | ||||||||||||||||||||||||||||||||||||
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注釈 | Composite map of the AMPAR complex GluA3-TARP gamma 2 in the apo state. | ||||||||||||||||||||||||||||||||||||
投影像・断面図 | 画像のコントロール
画像は Spider により作成 | ||||||||||||||||||||||||||||||||||||
ボクセルのサイズ | X=Y=Z: 0.826 Å | ||||||||||||||||||||||||||||||||||||
密度 |
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対称性 | 空間群: 1 | ||||||||||||||||||||||||||||||||||||
詳細 | EMDB XML:
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-添付データ
-追加マップ: Low-resolution consensus map of the AMPAR complex GluA3-TARP...
ファイル | emd_53109_additional_1.map | ||||||||||||
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注釈 | Low-resolution consensus map of the AMPAR complex GluA3-TARP gamma 2 in the apo state corresponding to the composite map. | ||||||||||||
投影像・断面図 |
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密度ヒストグラム |
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試料の構成要素
-全体 : homomeric AMPAR complex GluA3 in tandem with the auxiliary subuni...
全体 | 名称: homomeric AMPAR complex GluA3 in tandem with the auxiliary subunit TARP gamma2 |
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要素 |
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-超分子 #1: homomeric AMPAR complex GluA3 in tandem with the auxiliary subuni...
超分子 | 名称: homomeric AMPAR complex GluA3 in tandem with the auxiliary subunit TARP gamma2 タイプ: complex / ID: 1 / 親要素: 0 / 含まれる分子: all |
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由来(天然) | 生物種: ![]() ![]() |
-分子 #1: Isoform Flip of Glutamate receptor 3,Voltage-dependent calcium ch...
分子 | 名称: Isoform Flip of Glutamate receptor 3,Voltage-dependent calcium channel gamma-2 subunit タイプ: protein_or_peptide / ID: 1 / コピー数: 8 / 光学異性体: LEVO |
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由来(天然) | 生物種: ![]() ![]() |
分子量 | 理論値: 131.711859 KDa |
組換発現 | 生物種: ![]() |
配列 | 文字列: FPNTISIGGL FMRNTVQEHS AFRFAVQLYN TNQNTTEKPF HLNYHVDHLD SSNSFSVTNA FCSQFSRGVY AIFGFYDQMS MNTLTSFCG ALHTSFVTPS FPTDADVQFV IQMRPALKGA ILSLLSYYKW EKFVYLYDTE RGFSVLQAIM EAAVQNNWQV T ARSVGNIK ...文字列: FPNTISIGGL FMRNTVQEHS AFRFAVQLYN TNQNTTEKPF HLNYHVDHLD SSNSFSVTNA FCSQFSRGVY AIFGFYDQMS MNTLTSFCG ALHTSFVTPS FPTDADVQFV IQMRPALKGA ILSLLSYYKW EKFVYLYDTE RGFSVLQAIM EAAVQNNWQV T ARSVGNIK DVQEFRRIIE EMDRRQEKRY LIDCEVERIN TILEQVVILG KHSRGYHYML ANLGFTDILL ERVMHGGANI TG FQIVNNE NPMVQQFIQR WVRLDEREFP EAKNAPLKYT SALTHDAILV IAEAFRYLRR QRVDVSRRGS AGDCLANPAV PWS QGIDIE RALKMVQVQG MTGNIQFDTY GRRTNYTIDV YEMKVSGSRK AGYWNEYERF VPFSDQQISN DSSSSENRTI VVTT ILESP YVMYKKNHEQ LEGNERYEGY CVDLAYEIAK HVRIKYKLSI VGDGKYGARD PETKIWNGMV GELVYGRADI AVAPL TITL VREEVIDFSK PFMSLGISIM IKKPQKSKPG VFSFLDPLAY EIWMCIVFAY IGVSVVLFLV SRFSPYEWHL EDNNEE PRD PQSPPDPPNE FGIFNSLWFS LGAFMQQGCD ISPRSLSGRI VGGVWWFFTL IIISSYTANL AAFLTVERMV SPIESAE DL AKQTEIAYGT LDSGSTKEFF RRSKIAVYEK MWSYMKSAEP SVFTKTTADG VARVRKSKGK FAFLLESTMN EYIEQRKP C DTMKVGGNLD SKGYGVATPK GSALGTPVNL AVLKLSEQGI LDKLKNKWWY DKGECGAKDS GSKDKTSALS LSNVAGVFY ILVGGLGLAM MVALIEFCYK SRAESKRMKL TKNTQNFKPA PAGGSGSGGL FDRGVQMLLT TVGAFAAFSL MTIAVGTDYW LYSRGVCKT KSVSENETSK KNEEVMTHSG LWRTCCLEGN FKGLCKQIDH FPEDADYEAD TAEYFLRAVR ASSIFPILSV I LLFMGGLC IAASEFYKTR HNIILSAGIF FVSAGLSNII GIIVYISANA GDPSKSDSKK NSYSYGWSFY FGALSFIIAE MV GVLAVHM FIDRHKQLRA TARATDYLQA SAITRIPSYR YRYQRRSRSS SRSTEPSHSR DASPVGVKGF NTLPSTEISM YTL SRDPLK AATTPTATYN SDRDNSFLQV HNCIQKDSKD SLHANTANRR TTPV UniProtKB: Glutamate receptor 3, Voltage-dependent calcium channel gamma-2 subunit |
-実験情報
-構造解析
手法 | クライオ電子顕微鏡法 |
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![]() | 単粒子再構成法 |
試料の集合状態 | particle |
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試料調製
緩衝液 | pH: 8 |
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凍結 | 凍結剤: ETHANE |
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電子顕微鏡法
顕微鏡 | TFS KRIOS |
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撮影 | フィルム・検出器のモデル: GATAN K3 BIOQUANTUM (6k x 4k) 平均電子線量: 40.0 e/Å2 |
電子線 | 加速電圧: 300 kV / 電子線源: ![]() |
電子光学系 | 照射モード: FLOOD BEAM / 撮影モード: BRIGHT FIELD / Cs: 2.7 mm / 最大 デフォーカス(公称値): 2.4 µm / 最小 デフォーカス(公称値): 1.2 µm |
実験機器 | ![]() モデル: Titan Krios / 画像提供: FEI Company |