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基本情報
登録情報 | ![]() | ||||||||||||
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タイトル | Human FL Metabotropic glutamate receptor 5, mGlu5-5M with quisqualate and VU0424465, conformer 1 | ||||||||||||
![]() | combined map sharpened with B=-4 | ||||||||||||
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![]() | G-PROTEIN COUPLED RECEPTORS / SIGNAL TRANSDUCTION / METABOTROPIC GLUTAMATE RECEPTOR / Agonist / active state / MEMBRANE PROTEIN | ||||||||||||
機能・相同性 | ![]() A2A adenosine receptor binding / neurotransmitter receptor activity involved in regulation of postsynaptic cytosolic calcium ion concentration / G protein-coupled receptor activity involved in regulation of postsynaptic membrane potential / adenylate cyclase inhibiting G protein-coupled glutamate receptor activity / phospholipase C-activating G protein-coupled glutamate receptor signaling pathway / positive regulation of long-term neuronal synaptic plasticity / desensitization of G protein-coupled receptor signaling pathway / G protein-coupled glutamate receptor signaling pathway / astrocyte projection / Class C/3 (Metabotropic glutamate/pheromone receptors) ...A2A adenosine receptor binding / neurotransmitter receptor activity involved in regulation of postsynaptic cytosolic calcium ion concentration / G protein-coupled receptor activity involved in regulation of postsynaptic membrane potential / adenylate cyclase inhibiting G protein-coupled glutamate receptor activity / phospholipase C-activating G protein-coupled glutamate receptor signaling pathway / positive regulation of long-term neuronal synaptic plasticity / desensitization of G protein-coupled receptor signaling pathway / G protein-coupled glutamate receptor signaling pathway / astrocyte projection / Class C/3 (Metabotropic glutamate/pheromone receptors) / glutamate receptor activity / Neurexins and neuroligins / protein tyrosine kinase activator activity / regulation of synaptic transmission, glutamatergic / positive regulation of calcium-mediated signaling / dendritic shaft / protein tyrosine kinase binding / learning / locomotory behavior / synapse organization / postsynaptic density membrane / G protein-coupled receptor activity / Schaffer collateral - CA1 synapse / cognition / cellular response to amyloid-beta / chemical synaptic transmission / G alpha (q) signalling events / dendritic spine / learning or memory / positive regulation of MAPK cascade / neuronal cell body / dendrite / regulation of DNA-templated transcription / glutamatergic synapse / identical protein binding / plasma membrane / cytoplasm 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: 3.2 Å | ||||||||||||
![]() | Vinothkumar KR / Lebon G / Cannone G | ||||||||||||
資金援助 | ![]() ![]()
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![]() | ![]() タイトル: Conformational diversity in class C GPCR positive allosteric modulation. 著者: Giuseppe Cannone / Ludovic Berto / Fanny Malhaire / Gavin Ferguson / Aurelien Fouillen / Stéphanie Balor / Joan Font-Ingles / Amadeu Llebaria / Cyril Goudet / Abhay Kotecha / Vinothkumar K R ...著者: Giuseppe Cannone / Ludovic Berto / Fanny Malhaire / Gavin Ferguson / Aurelien Fouillen / Stéphanie Balor / Joan Font-Ingles / Amadeu Llebaria / Cyril Goudet / Abhay Kotecha / Vinothkumar K R / Guillaume Lebon / ![]() ![]() ![]() ![]() ![]() 要旨: The metabotropic glutamate receptors (mGlus) are class C G protein-coupled receptors (GPCR) that form obligate dimers activated by the major excitatory neurotransmitter L-glutamate. The architecture ...The metabotropic glutamate receptors (mGlus) are class C G protein-coupled receptors (GPCR) that form obligate dimers activated by the major excitatory neurotransmitter L-glutamate. The architecture of mGlu receptor comprises an extracellular Venus-Fly Trap domain (VFT) connected to the transmembrane domain (7TM) through a Cysteine-Rich Domain (CRD). The binding of L-glutamate in the VFTs and subsequent conformational change results in the signal being transmitted to the 7TM inducing G protein binding and activation. The mGlu receptors signal transduction can be allosterically potentiated by positive allosteric modulators (PAMs) binding to the 7TMs, which are of therapeutic interest in various neurological disorders. Here, we report the cryoEM structures of metabotropic glutamate receptor 5 (mGlu) purified with three chemically and pharmacologically distinct PAMs. We find that the PAMs modulate the receptor equilibrium through their different binding modes, revealing how their interactions in the 7TMs impact the mGlu receptor conformational landscape and function. In addition, we identified a PAM-free but agonist-bound intermediate state that also reveals interactions mediated by intracellular loop 2. The activation of mGlu receptor is a multi-step process in which the binding of the PAMs in the 7TM modulates the equilibrium towards the active state. | ||||||||||||
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マップデータ | ![]() | 59.3 MB | ![]() | |
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ヘッダ (付随情報) | ![]() ![]() | 25.4 KB 25.4 KB | 表示 表示 | ![]() |
FSC (解像度算出) | ![]() | 9.1 KB | 表示 | ![]() |
画像 | ![]() | 87.2 KB | ||
Filedesc metadata | ![]() | 8 KB | ||
その他 | ![]() ![]() ![]() | 56.5 MB 59.4 MB 59.4 MB | ||
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 | ![]() 8x0cMC ![]() 8x0bC ![]() 8x0dC ![]() 8x0eC ![]() 8x0fC ![]() 8x0gC ![]() 8x0hC 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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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
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注釈 | combined map sharpened with B=-4 | ||||||||||||||||||||||||||||||||||||
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: 1.02259 Å | ||||||||||||||||||||||||||||||||||||
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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: DeepEMhancer map used in model building.
ファイル | emd_37974_additional_1.map | ||||||||||||
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注釈 | DeepEMhancer map used in model building. | ||||||||||||
投影像・断面図 |
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密度ヒストグラム |
-ハーフマップ: One of the half-maps from cryosparc
ファイル | emd_37974_half_map_1.map | ||||||||||||
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注釈 | One of the half-maps from cryosparc | ||||||||||||
投影像・断面図 |
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密度ヒストグラム |
-ハーフマップ: One of the half-maps from cryosparc
ファイル | emd_37974_half_map_2.map | ||||||||||||
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注釈 | One of the half-maps from cryosparc | ||||||||||||
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 : Human FL Metabotropic glutamate receptor 5, mGlu5-5M with Quiaqua...
全体 | 名称: Human FL Metabotropic glutamate receptor 5, mGlu5-5M with Quiaqualate and VU0424465 |
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要素 |
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-超分子 #1: Human FL Metabotropic glutamate receptor 5, mGlu5-5M with Quiaqua...
超分子 | 名称: Human FL Metabotropic glutamate receptor 5, mGlu5-5M with Quiaqualate and VU0424465 タイプ: complex / ID: 1 / 親要素: 0 / 含まれる分子: #1 詳細: Receptor is purified in detergent micelles and monodisperse. The receptor is purified with 10 uM Quisqualate and 10 uM PAM VU0424465 |
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由来(天然) | 生物種: ![]() |
分子量 | 理論値: 200 KDa |
-分子 #1: Metabotropic glutamate receptor 5
分子 | 名称: Metabotropic glutamate receptor 5 / タイプ: protein_or_peptide / ID: 1 詳細: The construct has tags and protease cleavage site at its N-term (DYKDDDDKHHHHHHHHHHLEVLFQGP) and when compared to uniprot it starts at 21 and ends at 856. For CryoEM, the tag is cleaved and ...詳細: The construct has tags and protease cleavage site at its N-term (DYKDDDDKHHHHHHHHHHLEVLFQGP) and when compared to uniprot it starts at 21 and ends at 856. For CryoEM, the tag is cleaved and the protein used for experiment starts at QSSE but residues starting RR have been modeled. There are 5 thermostabilising mutations (T742A, S753A, T777A, I799A, A813L). Residue N445 is mutated to remove glycosylation. An additional mutation H350L is engineered for a nanobody to bind. Each monomer has one sugar modelled and 10 disulfide bonds. コピー数: 2 / 光学異性体: LEVO |
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由来(天然) | 生物種: ![]() |
分子量 | 理論値: 93.691492 KDa |
組換発現 | 生物種: ![]() |
配列 | 文字列: QSSERRVVAH MPGDIIIGAL FSVHHQPTVD KVHERKCGAV REQYGIQRVE AMLHTLERIN SDPTLLPNIT LGCEIRDSCW HSAVALEQS IEFIRDSLIS SEEEEGLVRC VDGSSSSFRS KKPIVGVIGP GSSSVAIQVQ NLLQLFNIPQ IAYSATSMDL S DKTLFKYF ...文字列: QSSERRVVAH MPGDIIIGAL FSVHHQPTVD KVHERKCGAV REQYGIQRVE AMLHTLERIN SDPTLLPNIT LGCEIRDSCW HSAVALEQS IEFIRDSLIS SEEEEGLVRC VDGSSSSFRS KKPIVGVIGP GSSSVAIQVQ NLLQLFNIPQ IAYSATSMDL S DKTLFKYF MRVVPSDAQQ ARAMVDIVKR YNWTYVSAVH TEGNYGESGM EAFKDMSAKE GICIAHSYKI YSNAGEQSFD KL LKKLTSH LPKARVVACF CEGMTVRGLL MAMRRLGLAG EFLLLGSDGW ADRYDVTDGY QREAVGGITI KLQSPDVKWF DDY YLKLRP ETNLRNPWFQ EFWQHRFQCR LEGFPQENSK YNKTCNSSLT LKTHHVQDSK MGFVINAIYS MAYGLHNMQM SLCP GYAGL CDAMKPIDGR KLLESLMKTA FTGVSGDTIL FDENGDSPGR YEIMNFKEMG KDYFDYINVG SWDNGELKMD DDEVW SKKS NIIRSVCSEP CEKGQIKVIR KGEVSCCWTC TPCKENEYVF DEYTCKACQL GSWPTDDLTG CDLIPVQYLR WGDPEP IAA VVFACLGLLA TLFVTVVFII YRDTPVVKSS SRELCYIILA GICLGYLCTF CLIAKPKQIY CYLQRIGIGL SPAMSYS AL VTKTNRIARI LAGSKKKICT KKPRFMSACA QLVIAFILIC IQLGIIVALF IMEPPDIMHD YPSIREVYLI CNTTNLGV V APLGYNGLLI LACTFYAFKT RNVPANFNEA KYIAFAMYTT CIIWLAFVPI YFGSNYKAIT MCFSVSLSAT VLLGCMFVP KVYIILAKPE RNVRSAFTTS TVVRMHVGDG KSSSAA UniProtKB: Metabotropic glutamate receptor 5 |
-分子 #2: 2-acetamido-2-deoxy-beta-D-glucopyranose
分子 | 名称: 2-acetamido-2-deoxy-beta-D-glucopyranose / タイプ: ligand / ID: 2 / コピー数: 2 / 式: NAG |
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分子量 | 理論値: 221.208 Da |
Chemical component information | ![]() ChemComp-NAG: |
-分子 #3: (S)-2-AMINO-3-(3,5-DIOXO-[1,2,4]OXADIAZOLIDIN-2-YL)-PROPIONIC ACID
分子 | 名称: (S)-2-AMINO-3-(3,5-DIOXO-[1,2,4]OXADIAZOLIDIN-2-YL)-PROPIONIC ACID タイプ: ligand / ID: 3 / コピー数: 2 / 式: QUS |
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分子量 | 理論値: 189.126 Da |
Chemical component information | ![]() ChemComp-QUS: |
-分子 #4: VU0424465
分子 | 名称: VU0424465 / タイプ: ligand / ID: 4 / コピー数: 2 / 式: XQT |
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分子量 | 理論値: 326.365 Da |
-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
濃度 | 6 mg/mL | ||||||||||
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緩衝液 | pH: 7.4 構成要素:
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グリッド | モデル: Quantifoil R0.6/1 / 材質: GOLD / メッシュ: 300 / 支持フィルム - 材質: CARBON / 支持フィルム - トポロジー: HOLEY / 前処理 - タイプ: PLASMA CLEANING / 前処理 - 時間: 60 sec. / 前処理 - 雰囲気: OTHER | ||||||||||
凍結 | 凍結剤: ETHANE / チャンバー内湿度: 100 % / チャンバー内温度: 283 K / 装置: FEI VITROBOT MARK IV / 詳細: Blotting time was 5 seconds, blot force of 10. | ||||||||||
詳細 | Receptor is purified in detergent micelles and monodisperse. The receptor is purified with 10 uM Quisqualate and 10 uM PAM VU0424465 |
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電子顕微鏡法
顕微鏡 | FEI TITAN KRIOS |
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詳細 | Data was collected with fringe-free imaging and aberration-free image shift. Selectris detector was used in EFTEM mode. |
撮影 | フィルム・検出器のモデル: FEI FALCON IV (4k x 4k) デジタル化 - サイズ - 横: 4096 pixel / デジタル化 - サイズ - 縦: 4096 pixel / 撮影したグリッド数: 1 / 実像数: 19115 / 平均露光時間: 4.9 sec. / 平均電子線量: 50.0 e/Å2 / 詳細: Electron flux was 5.4 /e/A2/s. No. of frames 1566 |
電子線 | 加速電圧: 300 kV / 電子線源: ![]() |
電子光学系 | C2レンズ絞り径: 50.0 µm / 倍率(補正後): 192572 / 照射モード: SPOT SCAN / 撮影モード: BRIGHT FIELD / Cs: 2.7 mm / 最大 デフォーカス(公称値): 1.2 µm / 最小 デフォーカス(公称値): 0.5 µm / 倍率(公称値): 165000 |
試料ステージ | 試料ホルダーモデル: FEI TITAN KRIOS AUTOGRID HOLDER ホルダー冷却材: NITROGEN |
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
初期モデル | PDB ID: Chain - Chain ID: A / Chain - Source name: Other / Chain - Initial model type: other / 詳細: This model is derived from the deposition ID |
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精密化 | 空間: RECIPROCAL / プロトコル: OTHER / 温度因子: 38.9 |
得られたモデル | ![]() PDB-8x0c: |