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データを開く
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基本情報
| 登録情報 | データベース: PDB / ID: 9yao | |||||||||||||||||||||
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| タイトル | Gbg crosslinked to PLCb3 - second conformation | |||||||||||||||||||||
要素 |
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キーワード | SIGNALING PROTEIN / G protein / heterotrimeric G protein / lipase / phospholipase | |||||||||||||||||||||
| 機能・相同性 | 機能・相同性情報phosphatidylinositol phospholipase C activity / phosphoinositide phospholipase C / Olfactory Signaling Pathway / Sensory perception of sweet, bitter, and umami (glutamate) taste / Fatty Acids bound to GPR40 (FFAR1) regulate insulin secretion / Acetylcholine regulates insulin secretion / Synthesis, secretion, and inactivation of Glucagon-like Peptide-1 (GLP-1) / phosphatidylinositol metabolic process / PLC beta mediated events / phospholipase C-activating serotonin receptor signaling pathway ...phosphatidylinositol phospholipase C activity / phosphoinositide phospholipase C / Olfactory Signaling Pathway / Sensory perception of sweet, bitter, and umami (glutamate) taste / Fatty Acids bound to GPR40 (FFAR1) regulate insulin secretion / Acetylcholine regulates insulin secretion / Synthesis, secretion, and inactivation of Glucagon-like Peptide-1 (GLP-1) / phosphatidylinositol metabolic process / PLC beta mediated events / phospholipase C-activating serotonin receptor signaling pathway / phosphatidylinositol-4,5-bisphosphate phospholipase C activity / regulation of systemic arterial blood pressure / Activation of the phototransduction cascade / C-type glycerophospholipase activity / Activation of G protein gated Potassium channels / G-protein activation / G beta:gamma signalling through PI3Kgamma / Prostacyclin signalling through prostacyclin receptor / G beta:gamma signalling through PLC beta / ADP signalling through P2Y purinoceptor 1 / Thromboxane signalling through TP receptor / Presynaptic function of Kainate receptors / G beta:gamma signalling through CDC42 / Inhibition of voltage gated Ca2+ channels via Gbeta/gamma subunits / G alpha (12/13) signalling events / Glucagon-type ligand receptors / G beta:gamma signalling through BTK / ADP signalling through P2Y purinoceptor 12 / Adrenaline,noradrenaline inhibits insulin secretion / Cooperation of PDCL (PhLP1) and TRiC/CCT in G-protein beta folding / Ca2+ pathway / G alpha (z) signalling events / Thrombin signalling through proteinase activated receptors (PARs) / Extra-nuclear estrogen signaling / G alpha (s) signalling events / G alpha (q) signalling events / G alpha (i) signalling events / Glucagon-like Peptide-1 (GLP1) regulates insulin secretion / High laminar flow shear stress activates signaling by PIEZO1 and PECAM1:CDH5:KDR in endothelial cells / Vasopressin regulates renal water homeostasis via Aquaporins / phosphatidylinositol-mediated signaling / Synthesis of IP3 and IP4 in the cytosol / postsynaptic cytosol / lipid catabolic process / release of sequestered calcium ion into cytosol / molecular function activator activity / G beta:gamma signalling through PLC beta / Presynaptic function of Kainate receptors / photoreceptor disc membrane / cellular response to catecholamine stimulus / adenylate cyclase-activating dopamine receptor signaling pathway / cellular response to prostaglandin E stimulus / heterotrimeric G-protein complex / G-protein beta-subunit binding / sensory perception of taste / signaling receptor complex adaptor activity / retina development in camera-type eye / GTPase binding / Ca2+ pathway / phospholipase C-activating G protein-coupled receptor signaling pathway / molecular adaptor activity / G alpha (q) signalling events / calmodulin binding / cell population proliferation / cadherin binding / G protein-coupled receptor signaling pathway / GTPase activity / calcium ion binding / synapse / protein-containing complex binding / protein-containing complex / membrane / nucleus / plasma membrane / cytoplasm / cytosol 類似検索 - 分子機能 | |||||||||||||||||||||
| 生物種 | Homo sapiens (ヒト)![]() | |||||||||||||||||||||
| 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: 7 Å | |||||||||||||||||||||
データ登録者 | Fisher, I.J. / Lyon, A.M. | |||||||||||||||||||||
| 資金援助 | 米国, 3件
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引用 | ジャーナル: bioRxiv / 年: 2026タイトル: Gβγ engages PLCβ3 at multiple sites to reorient and facilitate its activation. 著者: Isaac J Fisher / Kanishka Senarath / Kennedy Outlaw / Kaushik Muralidharan / Elisabeth E Garland-Kuntz / Michelle Van Camp / Tommy Komay / Asuka Inoue / Eva Kostenis / Nevin A Lambert / Angeline M Lyon / ![]() 要旨: Phospholipase C β (PLCβ) enzymes are activated by heterotrimeric G protein subunits, increasing hydrolysis of phosphatidylinositol-4,5-bisphosphate (PIP2) at the plasma membrane. All four human ...Phospholipase C β (PLCβ) enzymes are activated by heterotrimeric G protein subunits, increasing hydrolysis of phosphatidylinositol-4,5-bisphosphate (PIP2) at the plasma membrane. All four human PLCβ isoforms (PLCβ1-4) are activated by Gα, while PLCβ1-3 are activated to varying extents by Gβγ. The binding sites for Gα on PLCβ are well-established and much has been learned about its mechanism of activation, but comparatively little is known about Gβγ-dependent activation. In this work, we used cryo-electron microscopy (cryo-EM) single particle analysis (SPA), functional assays, and bioluminescence resonance energy transfer (BRET) to investigate how Gβγ interacts with PLCβ3 in concert with activated Gα to regulate phospholipase activity. Gβγ heterodimers bind multiple surfaces of PLCβ3 to promote activation but alone do not recruit the enzyme to the plasma membrane. Instead, Gβγ facilitates activation by Gα, most likely by reorienting the phospholipase catalytic site at the membrane to maximize PIP2 hydrolysis and downstream Ca release. Cell-based functional assays demonstrate that Gβγ is required for maximal PLCβ3 activation even when G heterotrimers are the sole source of Gβγ. Together, these findings demonstrate that Gβγ acts as a critical positive allosteric modulator that regularly acts in concert with Gα to activate PLCβ3 at the plasma membrane. | |||||||||||||||||||||
| 履歴 |
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構造の表示
| 構造ビューア | 分子: Molmil Jmol/JSmol |
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ダウンロードとリンク
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ダウンロード
| PDBx/mmCIF形式 | 9yao.cif.gz | 377.5 KB | 表示 | PDBx/mmCIF形式 |
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| PDB形式 | pdb9yao.ent.gz | 307.1 KB | 表示 | PDB形式 |
| PDBx/mmJSON形式 | 9yao.json.gz | ツリー表示 | PDBx/mmJSON形式 | |
| その他 | その他のダウンロード |
-検証レポート
| アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/ya/9yao ftp://data.pdbj.org/pub/pdb/validation_reports/ya/9yao | HTTPS FTP |
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-関連構造データ
| 関連構造データ | ![]() 72732MC ![]() 9y7hC ![]() 9yapC C: 同じ文献を引用 ( M: このデータのモデリングに利用したマップデータ |
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| 類似構造データ | 類似検索 - 機能・相同性 F&H 検索 |
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リンク
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集合体
| 登録構造単位 | ![]()
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| 1 |
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要素
| #1: タンパク質 | 分子量: 99653.891 Da / 分子数: 1 / 変異: E60C, S193C, S221C, S358C, S824C, S834C / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: PLCB3発現宿主: ![]() 参照: UniProt: Q01970, phosphoinositide phospholipase C |
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| #2: タンパク質 | 分子量: 36485.914 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() Trichoplusia ni (イラクサキンウワバ) / 参照: UniProt: P62871 |
| #3: タンパク質 | 分子量: 7861.143 Da / 分子数: 1 / 変異: C68S / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() Trichoplusia ni (イラクサキンウワバ) / 参照: UniProt: P63212 |
| Has protein modification | N |
-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: BMOE-crosslinked complex of Gb1g2 and PLCb3 / タイプ: COMPLEX / Entity ID: all / 由来: MULTIPLE SOURCES |
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| 分子量 | 値: 0.156 MDa / 実験値: NO |
| 由来(天然) | 生物種: Homo sapiens (ヒト) |
| 由来(組換発現) | 生物種: ![]() |
| 緩衝液 | pH: 7.4 詳細: 20 mM HEPES pH 7.4, 100 mM NaCl, 0.1 mM EDTA and 0.1 mM EGTA |
| 試料 | 濃度: 1 mg/ml / 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES |
| 試料支持 | グリッドのタイプ: Quantifoil R1.2/1.3 |
| 急速凍結 | 装置: FEI VITROBOT MARK IV / 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: TFS KRIOS |
| 電子銃 | 電子線源: FIELD EMISSION GUN / 加速電圧: 300 kV / 照射モード: FLOOD BEAM |
| 電子レンズ | モード: BRIGHT FIELD / 最大 デフォーカス(公称値): 3000 nm / 最小 デフォーカス(公称値): 1000 nm |
| 撮影 | 電子線照射量: 53.69 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
| EM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: 7 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 65306 / 対称性のタイプ: POINT | ||||||||||||||||||||||||||||||||||||||||
| 原子モデル構築 | プロトコル: FLEXIBLE FIT 詳細: Crystal structures of Gbetagamma and PLCbeta3 (PDB IDs 1GP2 and 4GNK) were rigid-body fit into the cryo-EM map using Chimera. The model was refined using molecular dynamic flexible fitting ...詳細: Crystal structures of Gbetagamma and PLCbeta3 (PDB IDs 1GP2 and 4GNK) were rigid-body fit into the cryo-EM map using Chimera. The model was refined using molecular dynamic flexible fitting (MDFF). MDFF configuration files were generated using VMD. During MDFF simulation, Gbetagamma was set as rigid with domain restraints. The MDFF simulation was conducted with a grid scaling value of 0.5 for 100 ps, followed by 3,000 steps of energy minimization until convergence of the protein RMSD. The MDFF generated model was inspected and manually adjusted in Coot, guided through the use of deep-learning-based amino-acid-wise model quality (DAQ) scoring, and refined in PHENIX. | ||||||||||||||||||||||||||||||||||||||||
| 原子モデル構築 |
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| 精密化 | 最高解像度: 7 Å 立体化学のターゲット値: REAL-SPACE (WEIGHTED MAP SUM AT ATOM CENTERS) | ||||||||||||||||||||||||||||||||||||||||
| 拘束条件 |
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ムービー
コントローラー
万見について




Homo sapiens (ヒト)

米国, 3件
引用






PDBj















FIELD EMISSION GUN

