+
データを開く
-
基本情報
| 登録情報 | データベース: PDB / ID: 9w0q | |||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| タイトル | Cryo-EM structure of T2R14 in complex with tangeretin and heterotrimeric G protein | |||||||||||||||||||||
要素 |
| |||||||||||||||||||||
キーワード | MEMBRANE PROTEIN / G protein-coupled receptor / Bitter taste receptor 14 / ligand binding / signal transduction | |||||||||||||||||||||
| 機能・相同性 | 機能・相同性情報bitter taste receptor activity / taste receptor activity / detection of chemical stimulus involved in sensory perception of bitter taste / Class C/3 (Metabotropic glutamate/pheromone receptors) / adenylate cyclase inhibitor activity / positive regulation of protein localization to cell cortex / T cell migration / positive regulation of relaxation of smooth muscle / Adenylate cyclase inhibitory pathway / D2 dopamine receptor binding ...bitter taste receptor activity / taste receptor activity / detection of chemical stimulus involved in sensory perception of bitter taste / Class C/3 (Metabotropic glutamate/pheromone receptors) / adenylate cyclase inhibitor activity / positive regulation of protein localization to cell cortex / T cell migration / positive regulation of relaxation of smooth muscle / Adenylate cyclase inhibitory pathway / D2 dopamine receptor binding / adenylate cyclase-inhibiting serotonin receptor signaling pathway / G protein-coupled serotonin receptor binding / cellular response to forskolin / regulation of mitotic spindle organization / chemokine-mediated signaling pathway / Regulation of insulin secretion / neuropeptide signaling pathway / response to prostaglandin E / electron transport chain / positive regulation of cholesterol biosynthetic process / negative regulation of insulin secretion / G protein-coupled receptor binding / response to peptide hormone / G protein-coupled receptor activity / centriolar satellite / G-protein beta/gamma-subunit complex binding / adenylate cyclase-modulating G protein-coupled receptor signaling pathway / adenylate cyclase-inhibiting G protein-coupled receptor signaling pathway / Olfactory Signaling Pathway / Activation of the phototransduction cascade / G protein-coupled acetylcholine receptor signaling pathway / G beta:gamma signalling through PLC beta / Presynaptic function of Kainate receptors / Thromboxane signalling through TP receptor / Activation of G protein gated Potassium channels / Inhibition of voltage gated Ca2+ channels via Gbeta/gamma subunits / G-protein activation / Glucagon signaling in metabolic regulation / Prostacyclin signalling through prostacyclin receptor / G beta:gamma signalling through CDC42 / Synthesis, secretion, and inactivation of Glucagon-like Peptide-1 (GLP-1) / G beta:gamma signalling through BTK / photoreceptor disc membrane / ADP signalling through P2Y purinoceptor 12 / Sensory perception of sweet, bitter, and umami (glutamate) taste / Glucagon-type ligand receptors / GDP binding / Adrenaline,noradrenaline inhibits insulin secretion / Vasopressin regulates renal water homeostasis via Aquaporins / Glucagon-like Peptide-1 (GLP1) regulates insulin secretion / G alpha (z) signalling events / cellular response to catecholamine stimulus / ADP signalling through P2Y purinoceptor 1 / ADORA2B mediated anti-inflammatory cytokines production / G beta:gamma signalling through PI3Kgamma / adenylate cyclase-activating dopamine receptor signaling pathway / Cooperation of PDCL (PhLP1) and TRiC/CCT in G-protein beta folding / GPER1 signaling / cellular response to prostaglandin E stimulus / heterotrimeric G-protein complex / G alpha (12/13) signalling events / Inactivation, recovery and regulation of the phototransduction cascade / G-protein beta-subunit binding / extracellular vesicle / sensory perception of taste / sperm principal piece / Thrombin signalling through proteinase activated receptors (PARs) / signaling receptor complex adaptor activity / adenylate cyclase-activating G protein-coupled receptor signaling pathway / retina development in camera-type eye / GTPase binding / fibroblast proliferation / G protein activity / midbody / Ca2+ pathway / cell cortex / High laminar flow shear stress activates signaling by PIEZO1 and PECAM1:CDH5:KDR in endothelial cells / G alpha (i) signalling events / G alpha (s) signalling events / phospholipase C-activating G protein-coupled receptor signaling pathway / G alpha (q) signalling events / 加水分解酵素; 酸無水物に作用; GTPに作用・細胞または細胞小器官の運動に関与 / Ras protein signal transduction / periplasmic space / electron transfer activity / Extra-nuclear estrogen signaling / cell population proliferation / ciliary basal body / iron ion binding / G protein-coupled receptor signaling pathway / cell division / lysosomal membrane / GTPase activity / heme binding / centrosome / synapse / GTP binding / protein-containing complex binding / nucleolus / magnesium ion binding 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: 3.2 Å | |||||||||||||||||||||
データ登録者 | Tan, Q. / Yu, Y. / Han, X. / Zhao, Q. / Wu, B. | |||||||||||||||||||||
| 資金援助 | 中国, 4件
| |||||||||||||||||||||
引用 | ジャーナル: Nat Struct Mol Biol / 年: 2026タイトル: Ligand binding modes of the bitter taste receptor T2R14 and T2R46. 著者: Qiuxiang Tan / Yu Yu / Xuteng Han / Kezhen Liu / Shuo Han / Mu Wang / Yuan Wei / Yingrong Zhu / Qiuru Chen / Limin Ma / Cuiying Yi / Xiaojing Chu / Beili Wu / Qiang Zhao / ![]() 要旨: Bitter taste receptors (T2Rs) are considered attractive drug targets. However, the ligand recognition and selectivity of these receptors remain elusive, hampering their drug development. Here we ...Bitter taste receptors (T2Rs) are considered attractive drug targets. However, the ligand recognition and selectivity of these receptors remain elusive, hampering their drug development. Here we present seven structures of human T2R14 and T2R46 in apo or ligand-bound state. Combined with molecular docking and mutagenesis data, the structures reveal an extracellular ligand-binding site in T2R14 for most of its ligands, which is different from the intracellular binding site reported recently. In contrast, T2R46 exhibits a conserved binding pocket that accommodates various ligands with distinct interaction patterns. Furthermore, the second extracellular loop in T2R14 and T2R46 acts as a tethered agonist to potentially facilitate agonist response of these two receptors to the weak tastant agonists. These findings could accelerate drug discovery targeting T2Rs. | |||||||||||||||||||||
| 履歴 |
|
-
構造の表示
| 構造ビューア | 分子: Molmil Jmol/JSmol |
|---|
-
ダウンロードとリンク
-
ダウンロード
| PDBx/mmCIF形式 | 9w0q.cif.gz | 173.9 KB | 表示 | PDBx/mmCIF形式 |
|---|---|---|---|---|
| PDB形式 | pdb9w0q.ent.gz | 表示 | PDB形式 | |
| PDBx/mmJSON形式 | 9w0q.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/w0/9w0q ftp://data.pdbj.org/pub/pdb/validation_reports/w0/9w0q | HTTPS FTP |
|---|
-関連構造データ
| 関連構造データ | ![]() 65512MC ![]() 9w0pC ![]() 9w0rC ![]() 9w0sC ![]() 9w0tC ![]() 9w0uC ![]() 9w0wC M: このデータのモデリングに利用したマップデータ C: 同じ文献を引用 ( |
|---|---|
| 類似構造データ | 類似検索 - 機能・相同性 F&H 検索 |
-
リンク
-
集合体
| 登録構造単位 | ![]()
|
|---|---|
| 1 |
|
-
要素
| #1: タンパク質 | 分子量: 40458.102 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: GNAI1発現宿主: ![]() 参照: UniProt: P63096, 加水分解酵素; 酸無水物に作用; GTPに作用・細胞または細胞小器官の運動に関与 |
|---|---|
| #2: 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) Homo sapiens (ヒト) / 遺伝子: GNB1発現宿主: ![]() 参照: UniProt: P62873 |
| #3: 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) Homo sapiens (ヒト) / 遺伝子: GNG2発現宿主: ![]() 参照: UniProt: P59768 |
| #4: タンパク質 | 分子量: 54569.516 Da / 分子数: 1 / 由来タイプ: 組換発現 由来: (組換発現) ![]() Homo sapiens (ヒト)遺伝子: cybC, TAS2R14 発現宿主: ![]() 参照: UniProt: P0ABE7, UniProt: Q9NYV8 |
| #5: 化合物 | ChemComp-A1EUI / 分子量: 372.369 Da / 分子数: 1 / 由来タイプ: 合成 / 式: C20H20O7 |
| 研究の焦点であるリガンドがあるか | Y |
| Has protein modification | N |
-実験情報
-実験
| 実験 | 手法: 電子顕微鏡法 |
|---|---|
| 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 |
-
試料調製
| 構成要素 | 名称: Ternary complex of T2R14 with G protein heterotrimeric タイプ: COMPLEX / Entity ID: #1-#4 / 由来: RECOMBINANT | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 分子量 | 値: 10 kDa/nm / 実験値: YES | ||||||||||||
| 由来(天然) |
| ||||||||||||
| 由来(組換発現) | 生物種: ![]() | ||||||||||||
| 緩衝液 | pH: 7.5 | ||||||||||||
| 緩衝液成分 | 濃度: 2.8 mg/ml / 名称: sodium chloride / 式: 150mM | ||||||||||||
| 試料 | 濃度: 2 mg/ml / 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES / 詳細: This sample was monodisperse | ||||||||||||
| 急速凍結 | 装置: FEI VITROBOT MARK IV / 凍結剤: ETHANE / 湿度: 100 % / 凍結前の試料温度: 298 K / 詳細: blot for 1s |
-
電子顕微鏡撮影
| 実験機器 | ![]() モデル: Tecnai F30 / 画像提供: FEI Company |
|---|---|
| 顕微鏡 | モデル: FEI TECNAI F30 |
| 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): 1500 nm / 最小 デフォーカス(公称値): 800 nm / Cs: 2.7 mm / アライメント法: BASIC |
| 撮影 | 平均露光時間: 2 sec. / 電子線照射量: 60 e/Å2 フィルム・検出器のモデル: GATAN K3 BIOQUANTUM (6k x 4k) 撮影したグリッド数: 2 / 実像数: 9856 / 詳細: Images were collected in movie-mode |
-
解析
| EMソフトウェア |
| ||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 画像処理 | 詳細: The selected images were 20eV using GIF-Quantum LS Imaging energy filter | ||||||||||||||||||||||||
| CTF補正 | タイプ: NONE | ||||||||||||||||||||||||
| 粒子像の選択 | 選択した粒子像数: 3399613 | ||||||||||||||||||||||||
| 3次元再構成 | 解像度: 3.2 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 883086 / 対称性のタイプ: POINT | ||||||||||||||||||||||||
| 原子モデル構築 | B value: 31.78 / 空間: REAL | ||||||||||||||||||||||||
| 原子モデル構築 | PDB-ID: 7x9a Accession code: 7x9a / Source name: PDB / タイプ: experimental model | ||||||||||||||||||||||||
| 精密化 | 最高解像度: 3.2 Å 立体化学のターゲット値: REAL-SPACE (WEIGHTED MAP SUM AT ATOM CENTERS) | ||||||||||||||||||||||||
| 拘束条件 |
|
ムービー
コントローラー
万見について




Homo sapiens (ヒト)

中国, 4件
引用












PDBj































FIELD EMISSION GUN
