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基本情報
登録情報 | データベース: PDB / ID: 7e9h | ||||||||||||||||||
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タイトル | Cryo-EM structure of Gi-bound metabotropic glutamate receptor mGlu4 | ||||||||||||||||||
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![]() | MEMBRANE PROTEIN / mGlu4 / GPCR / Cryo-EM / complex | ||||||||||||||||||
機能・相同性 | ![]() adenylate cyclase-inhibiting G protein-coupled glutamate receptor signaling pathway / adenylate cyclase inhibiting G protein-coupled glutamate receptor activity / neurotransmitter secretion / G protein-coupled glutamate receptor signaling pathway / negative regulation of adenylate cyclase activity / Class C/3 (Metabotropic glutamate/pheromone receptors) / glutamate receptor activity / GTP metabolic process / positive regulation of macroautophagy / Adenylate cyclase inhibitory pathway ...adenylate cyclase-inhibiting G protein-coupled glutamate receptor signaling pathway / adenylate cyclase inhibiting G protein-coupled glutamate receptor activity / neurotransmitter secretion / G protein-coupled glutamate receptor signaling pathway / negative regulation of adenylate cyclase activity / Class C/3 (Metabotropic glutamate/pheromone receptors) / glutamate receptor activity / GTP metabolic process / positive regulation of macroautophagy / Adenylate cyclase inhibitory pathway / regulation of synaptic transmission, glutamatergic / regulation of neuron apoptotic process / G protein-coupled receptor binding / adenylate cyclase-inhibiting G protein-coupled receptor signaling pathway / G protein-coupled receptor activity / adenylate cyclase-modulating G protein-coupled receptor signaling pathway / G-protein beta/gamma-subunit complex binding / centriolar satellite / Olfactory Signaling Pathway / Activation of the phototransduction cascade / G beta:gamma signalling through PLC beta / Presynaptic function of Kainate receptors / Thromboxane signalling through TP receptor / G protein-coupled acetylcholine receptor signaling pathway / G-protein activation / Activation of G protein gated Potassium channels / Inhibition of voltage gated Ca2+ channels via Gbeta/gamma subunits / Prostacyclin signalling through prostacyclin receptor / G beta:gamma signalling through CDC42 / Glucagon signaling in metabolic regulation / G beta:gamma signalling through BTK / Synthesis, secretion, and inactivation of Glucagon-like Peptide-1 (GLP-1) / ADP signalling through P2Y purinoceptor 12 / Sensory perception of sweet, bitter, and umami (glutamate) taste / photoreceptor disc membrane / Glucagon-type ligand receptors / Adrenaline,noradrenaline inhibits insulin secretion / Vasopressin regulates renal water homeostasis via Aquaporins / GDP binding / G alpha (z) signalling events / Glucagon-like Peptide-1 (GLP1) regulates insulin secretion / cellular response to catecholamine stimulus / ADORA2B mediated anti-inflammatory cytokines production / ADP signalling through P2Y purinoceptor 1 / G beta:gamma signalling through PI3Kgamma / Cooperation of PDCL (PhLP1) and TRiC/CCT in G-protein beta folding / adenylate cyclase-activating dopamine receptor signaling pathway / GPER1 signaling / Inactivation, recovery and regulation of the phototransduction cascade / cellular response to prostaglandin E stimulus / G-protein beta-subunit binding / heterotrimeric G-protein complex / G alpha (12/13) signalling events / sensory perception of taste / extracellular vesicle / signaling receptor complex adaptor activity / presynapse / Thrombin signalling through proteinase activated receptors (PARs) / GTPase binding / Ca2+ pathway / retina development in camera-type eye / midbody / High laminar flow shear stress activates signaling by PIEZO1 and PECAM1:CDH5:KDR in endothelial cells / cytoplasmic vesicle / fibroblast proliferation / G alpha (i) signalling events / G alpha (s) signalling events / phospholipase C-activating G protein-coupled receptor signaling pathway / chemical synaptic transmission / G alpha (q) signalling events / Ras protein signal transduction / Extra-nuclear estrogen signaling / cell population proliferation / positive regulation of MAPK cascade / ciliary basal body / G protein-coupled receptor signaling pathway / lysosomal membrane / cell division / GTPase activity / synapse / centrosome / protein-containing complex binding / GTP binding / nucleolus / Golgi apparatus / signal transduction / extracellular exosome / nucleoplasm / metal ion binding / membrane / plasma membrane / cytosol / cytoplasm 類似検索 - 分子機能 | ||||||||||||||||||
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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: 4 Å | ||||||||||||||||||
![]() | Lin, S. / Han, S. / Zhao, Q. / Wu, B. | ||||||||||||||||||
資金援助 | ![]()
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![]() | ![]() タイトル: Structures of G-bound metabotropic glutamate receptors mGlu2 and mGlu4. 著者: Shuling Lin / Shuo Han / Xiaoqing Cai / Qiuxiang Tan / Kexiu Zhou / Dejian Wang / Xinwei Wang / Juan Du / Cuiying Yi / Xiaojing Chu / Antao Dai / Yan Zhou / Yan Chen / Yu Zhou / Hong Liu / ...著者: Shuling Lin / Shuo Han / Xiaoqing Cai / Qiuxiang Tan / Kexiu Zhou / Dejian Wang / Xinwei Wang / Juan Du / Cuiying Yi / Xiaojing Chu / Antao Dai / Yan Zhou / Yan Chen / Yu Zhou / Hong Liu / Jianfeng Liu / Dehua Yang / Ming-Wei Wang / Qiang Zhao / Beili Wu / ![]() 要旨: The metabotropic glutamate receptors (mGlus) have key roles in modulating cell excitability and synaptic transmission in response to glutamate (the main excitatory neurotransmitter in the central ...The metabotropic glutamate receptors (mGlus) have key roles in modulating cell excitability and synaptic transmission in response to glutamate (the main excitatory neurotransmitter in the central nervous system). It has previously been suggested that only one receptor subunit within an mGlu homodimer is responsible for coupling to G protein during receptor activation. However, the molecular mechanism that underlies the asymmetric signalling of mGlus remains unknown. Here we report two cryo-electron microscopy structures of human mGlu2 and mGlu4 bound to heterotrimeric G protein. The structures reveal a G-protein-binding site formed by three intracellular loops and helices III and IV that is distinct from the corresponding binding site in all of the other G-protein-coupled receptor (GPCR) structures. Furthermore, we observed an asymmetric dimer interface of the transmembrane domain of the receptor in the two mGlu-G structures. We confirmed that the asymmetric dimerization is crucial for receptor activation, which was supported by functional data; this dimerization may provide a molecular basis for the asymmetric signal transduction of mGlus. These findings offer insights into receptor signalling of class C GPCRs. | ||||||||||||||||||
履歴 |
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構造の表示
ムービー |
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構造ビューア | 分子: ![]() ![]() |
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PDBx/mmCIF形式 | ![]() | 410.2 KB | 表示 | ![]() |
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PDB形式 | ![]() | 310.8 KB | 表示 | ![]() |
PDBx/mmJSON形式 | ![]() | ツリー表示 | ![]() | |
その他 | ![]() |
-検証レポート
アーカイブディレクトリ | ![]() ![]() | HTTPS FTP |
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-関連構造データ
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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
-Guanine nucleotide-binding protein ... , 3種, 3分子 ABC
#2: タンパク質 | 分子量: 40552.070 Da / 分子数: 1 / Mutation: S47N, F191D, G203A, E245A, A326S / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() 発現宿主: ![]() 参照: UniProt: P08754 |
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#3: タンパク質 | 分子量: 38744.371 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() 発現宿主: ![]() 参照: UniProt: P62873 |
#4: タンパク質 | 分子量: 7861.143 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() 発現宿主: ![]() 参照: UniProt: P59768 |
-タンパク質 / 抗体 / 非ポリマー , 3種, 5分子 RSD

#1: タンパク質 | 分子量: 99458.359 Da / 分子数: 2 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() 発現宿主: ![]() 参照: UniProt: Q14833 #5: 抗体 | | 分子量: 27409.588 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() 発現宿主: ![]() #6: 化合物 | |
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-詳細
研究の焦点であるリガンドがあるか | Y |
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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: Complex of mGlu4 homodimer with heterotrimeric Gi3 protein in presence of antibody タイプ: COMPLEX / Entity ID: #1-#5 / 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: 7.4 |
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: FEI TITAN KRIOS |
電子銃 | 電子線源: ![]() |
電子レンズ | モード: BRIGHT FIELD |
撮影 | 電子線照射量: 70 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
ソフトウェア |
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CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||
3次元再構成 | 解像度: 4 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 617760 / 対称性のタイプ: POINT | ||||||||||||||||||||||||
精密化 | 交差検証法: NONE 立体化学のターゲット値: GeoStd + Monomer Library + CDL v1.2 | ||||||||||||||||||||||||
原子変位パラメータ | Biso mean: 65.37 Å2 | ||||||||||||||||||||||||
拘束条件 |
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