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基本情報
登録情報 | ![]() | ||||||||||||
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タイトル | Homomeric GluA2 flip R/G-edited Q/R-edited F231A mutant in tandem with TARP gamma-2, desensitized conformation 3 | ||||||||||||
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![]() | AMPA-type glutamate neurotransmitter receptor / auxiliary subunit complex / agonist / desensitized / 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 / 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 / protein targeting to membrane / voltage-gated calcium channel complex / spine synapse / dendritic spine neck / neurotransmitter receptor localization to postsynaptic specialization membrane / dendritic spine head / neuromuscular junction development / cellular response to amine stimulus / Activation of AMPA receptors / perisynaptic space / ligand-gated monoatomic cation channel activity / AMPA glutamate receptor activity / transmission of nerve impulse / Trafficking of GluR2-containing AMPA receptors / response to lithium ion / kainate selective glutamate receptor activity / AMPA glutamate receptor complex / cellular response to glycine / extracellularly glutamate-gated ion channel activity / ionotropic glutamate receptor complex / immunoglobulin binding / asymmetric synapse / conditioned place preference / membrane depolarization / regulation of receptor recycling / glutamate receptor binding / Unblocking of NMDA receptors, glutamate binding and activation / positive regulation of synaptic transmission / regulation of postsynaptic membrane neurotransmitter receptor levels / voltage-gated calcium channel activity / response to fungicide / regulation of synaptic transmission, glutamatergic / glutamate-gated receptor activity / cytoskeletal protein binding / regulation of long-term synaptic depression / extracellular ligand-gated monoatomic ion channel activity / cellular response to brain-derived neurotrophic factor stimulus / glutamate-gated calcium ion channel activity / presynaptic active zone membrane / somatodendritic compartment / dendrite membrane / ligand-gated monoatomic ion channel activity involved in regulation of presynaptic membrane potential / ionotropic glutamate receptor binding / dendrite cytoplasm / ionotropic glutamate receptor signaling pathway / positive regulation of synaptic transmission, glutamatergic / hippocampal mossy fiber to CA3 synapse / SNARE binding / 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 / PDZ domain binding / protein tetramerization / establishment of protein localization / synaptic membrane / postsynaptic density membrane / modulation of chemical synaptic transmission / cerebral cortex development / receptor internalization / Schaffer collateral - CA1 synapse / response to calcium ion / terminal bouton / synaptic vesicle membrane / synaptic vesicle / signaling receptor activity / presynapse / amyloid-beta binding / presynaptic membrane / growth cone / scaffold protein binding / perikaryon / chemical synaptic transmission / dendritic spine / postsynaptic membrane / neuron projection / postsynaptic density / axon / external side of plasma membrane / neuronal cell body / synapse / dendrite / protein kinase binding / protein-containing complex binding / glutamatergic synapse / cell surface / endoplasmic reticulum / protein-containing complex 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: 3.55 Å | ||||||||||||
![]() | Krieger JM / Zhang D / Yamashita K / Greger IH | ||||||||||||
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. | ||||||||||||
履歴 |
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構造の表示
添付画像 |
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ダウンロードとリンク
-EMDBアーカイブ
マップデータ | ![]() | 32.5 MB | ![]() | |
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ヘッダ (付随情報) | ![]() ![]() | 16.2 KB 16.2 KB | 表示 表示 | ![]() |
FSC (解像度算出) | ![]() | 9.1 KB | 表示 | ![]() |
画像 | ![]() | 70.6 KB | ||
Filedesc metadata | ![]() | 6.2 KB | ||
その他 | ![]() ![]() | 59.4 MB 59.4 MB | ||
アーカイブディレクトリ | ![]() ![]() | HTTPS FTP |
-検証レポート
文書・要旨 | ![]() | 1 MB | 表示 | ![]() |
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文書・詳細版 | ![]() | 1 MB | 表示 | |
XML形式データ | ![]() | 15.8 KB | 表示 | |
CIF形式データ | ![]() | 21 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 | ![]() 8p3yMC ![]() 8c1pC ![]() 8c1qC ![]() 8c1rC ![]() 8c1sC ![]() 8c2hC ![]() 8c2iC ![]() 8p3qC ![]() 8p3sC ![]() 8p3tC ![]() 8p3uC ![]() 8p3vC ![]() 8p3wC ![]() 8p3xC ![]() 8p3zC ![]() 8pivC M: このマップから作成された原子モデル 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
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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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: 1.4455 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
-ハーフマップ: #2
ファイル | emd_17399_half_map_1.map | ||||||||||||
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投影像・断面図 |
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密度ヒストグラム |
-ハーフマップ: #1
ファイル | emd_17399_half_map_2.map | ||||||||||||
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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 : GluA2igR_F231A-gamma2 tandem
全体 | 名称: GluA2igR_F231A-gamma2 tandem |
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要素 |
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-超分子 #1: GluA2igR_F231A-gamma2 tandem
超分子 | 名称: GluA2igR_F231A-gamma2 tandem / タイプ: complex / ID: 1 / 親要素: 0 / 含まれる分子: all 詳細: GluA2 C-terminus fused to gamma-2 N-terminus with a linker |
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由来(天然) | 生物種: ![]() ![]() |
分子量 | 理論値: 540 KDa |
-分子 #1: Glutamate receptor 2
分子 | 名称: Glutamate receptor 2 / タイプ: protein_or_peptide / ID: 1 / コピー数: 4 / 光学異性体: LEVO |
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由来(天然) | 生物種: ![]() ![]() |
分子量 | 理論値: 98.655672 KDa |
組換発現 | 生物種: ![]() |
配列 | 文字列: MQKIMHISVL LSPVLWGLIF GVSSNSIQIG GLFPRGADQE YSAFRVGMVQ FSTSEFRLTP HIDNLEVANS FAVTNAFCSQ FSRGVYAIF GFYDKKSVNT ITSFCGTLHV SFIGFPTDGT HPFVIQMRPD LKGALLSLIE YYQWDKFAYL YDSDRGLSTL Q AVLDSAAE ...文字列: MQKIMHISVL LSPVLWGLIF GVSSNSIQIG GLFPRGADQE YSAFRVGMVQ FSTSEFRLTP HIDNLEVANS FAVTNAFCSQ FSRGVYAIF GFYDKKSVNT ITSFCGTLHV SFIGFPTDGT HPFVIQMRPD LKGALLSLIE YYQWDKFAYL YDSDRGLSTL Q AVLDSAAE KKWQVTAINV GNINNDKKDE TYRSLFQDLE LKKERRVILD CERDKVNDIV DQVITIGKHV KGYHYIIANL GF TDGDLLK IQFGGANVSG FQIVDYDDSL VSKFIERWST LEEKEYPGAH TATIKYTSAL TYDAVQVMTE AFRNLRKQRI EIS RRGNAG DCLANPAVPW GQGVEIERAL KQVQVEGLSG NIKFDQNGKR INYTINIMEL KTNGPRKIGY WSEVDKMVVT LTEL PSGND TSGLENKTVV VTTILESPYV MMKKNHEMLE GNERYEGYCV DLAAEIAKHC GFKYKLTIVG DGKYGARDAD TKIWN GMVG ELVYGKADIA IAPLTITLVR EEVIDFSKPF MSLGISIMIK KPQKSKPGVF SFLDPLAYEI WMCIVFAYIG VSVVLF LVS RFSPYEWHTE EFEDGRETQS SESTNEFGIF NSLWFSLGAF MRQGCDISPR SLSGRIVGGV WWFFTLIIIS SYTANLA AF LTVERMVSPI ESAEDLSKQT EIAYGTLDSG STKEFFRRSK IAVFDKMWTY MRSAEPSVFV RTTAEGVARV RKSKGKYA Y LLESTMNEYI EQRKPCDTMK VGGNLDSKGY GIATPKGSSL GTPVNLAVLK LSEQGVLDKL KNKWWYDKGE CGAKDSGSK EKTSALSLSN VAGVFYILVG GLGLAMLVAL IEFCYKSRAE AKRMKVAKNP QNINPSSSQN SQNFATYKEG YNVYGIESVK I UniProtKB: Glutamate receptor 2 |
-分子 #2: Voltage-dependent calcium channel gamma-2 subunit
分子 | 名称: Voltage-dependent calcium channel gamma-2 subunit / タイプ: protein_or_peptide / ID: 2 / コピー数: 4 / 光学異性体: LEVO |
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由来(天然) | 生物種: ![]() ![]() |
分子量 | 理論値: 35.938746 KDa |
組換発現 | 生物種: ![]() |
配列 | 文字列: MGLFDRGVQM LLTTVGAFAA FSLMTIAVGT DYWLYSRGVC KTKSVSENET SKKNEEVMTH SGLWRTCCLE GNFKGLCKQI DHFPEDADY EADTAEYFLR AVRASSIFPI LSVILLFMGG LCIAASEFYK TRHNIILSAG IFFVSAGLSN IIGIIVYISA N AGDPSKSD ...文字列: MGLFDRGVQM LLTTVGAFAA FSLMTIAVGT DYWLYSRGVC KTKSVSENET SKKNEEVMTH SGLWRTCCLE GNFKGLCKQI DHFPEDADY EADTAEYFLR AVRASSIFPI LSVILLFMGG LCIAASEFYK TRHNIILSAG IFFVSAGLSN IIGIIVYISA N AGDPSKSD SKKNSYSYGW SFYFGALSFI IAEMVGVLAV HMFIDRHKQL RATARATDYL QASAITRIPS YRYRYQRRSR SS SRSTEPS HSRDASPVGV KGFNTLPSTE ISMYTLSRDP LKAATTPTAT YNSDRDNSFL QVHNCIQKDS KDSLHANTAN RRT TPV UniProtKB: 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: 50.0 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 / 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): 1.4000000000000001 µm |
実験機器 | ![]() モデル: Titan Krios / 画像提供: FEI Company |
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画像解析
-原子モデル構築 1
精密化 | 空間: REAL / プロトコル: RIGID BODY FIT |
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得られたモデル | ![]() PDB-8p3y: |