+データを開く
-基本情報
登録情報 | データベース: EMDB / ID: EMD-43650 | |||||||||
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タイトル | CryoEM structure of Ggust-coupled TAS2R14 with cholesterol and an intracellular tastant | |||||||||
マップデータ | ||||||||||
試料 |
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キーワード | GPCR / Complex / SIGNALING PROTEIN / Taste receptor | |||||||||
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) / G protein-coupled receptor activity / 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 ...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) / G protein-coupled receptor activity / 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 / Glucagon signaling in metabolic regulation / G beta:gamma signalling through CDC42 / G beta:gamma signalling through BTK / ADP signalling through P2Y purinoceptor 12 / Sensory perception of sweet, bitter, and umami (glutamate) taste / Synthesis, secretion, and inactivation of Glucagon-like Peptide-1 (GLP-1) / photoreceptor disc membrane / Glucagon-type ligand receptors / Adrenaline,noradrenaline inhibits insulin secretion / Vasopressin regulates renal water homeostasis via Aquaporins / G alpha (z) signalling events / Glucagon-like Peptide-1 (GLP1) regulates insulin secretion / cellular response to catecholamine stimulus / ADORA2B mediated anti-inflammatory cytokines production / sensory perception of taste / ADP signalling through P2Y purinoceptor 1 / 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 / Inactivation, recovery and regulation of the phototransduction cascade / G-protein beta-subunit binding / heterotrimeric G-protein complex / G alpha (12/13) signalling events / extracellular vesicle / signaling receptor complex adaptor activity / Thrombin signalling through proteinase activated receptors (PARs) / GTPase binding / retina development in camera-type eye / Ca2+ pathway / phospholipase C-activating G protein-coupled receptor signaling pathway / G alpha (i) signalling events / fibroblast proliferation / G alpha (s) signalling events / G alpha (q) signalling events / Ras protein signal transduction / cell population proliferation / Extra-nuclear estrogen signaling / G protein-coupled receptor signaling pathway / lysosomal membrane / GTPase activity / synapse / protein-containing complex binding / signal transduction / extracellular exosome / membrane / plasma membrane / cytosol / cytoplasm 類似検索 - 分子機能 | |||||||||
生物種 | Homo sapiens (ヒト) / Mus musculus (ハツカネズミ) | |||||||||
手法 | 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度: 2.88 Å | |||||||||
データ登録者 | Kim Y / Gumpper RH / Roth BL | |||||||||
資金援助 | 米国, 1件
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引用 | ジャーナル: Nature / 年: 2024 タイトル: Bitter taste receptor activation by cholesterol and an intracellular tastant. 著者: Yoojoong Kim / Ryan H Gumpper / Yongfeng Liu / D Dewran Kocak / Yan Xiong / Can Cao / Zhijie Deng / Brian E Krumm / Manish K Jain / Shicheng Zhang / Jian Jin / Bryan L Roth / 要旨: Bitter taste sensing is mediated by type 2 taste receptors (TAS2Rs (also known as T2Rs)), which represent a distinct class of G-protein-coupled receptors. Among the 26 members of the TAS2Rs, TAS2R14 ...Bitter taste sensing is mediated by type 2 taste receptors (TAS2Rs (also known as T2Rs)), which represent a distinct class of G-protein-coupled receptors. Among the 26 members of the TAS2Rs, TAS2R14 is highly expressed in extraoral tissues and mediates the responses to more than 100 structurally diverse tastants, although the molecular mechanisms for recognizing diverse chemicals and initiating cellular signalling are still poorly understood. Here we report two cryo-electron microscopy structures for TAS2R14 complexed with G (also known as gustducin) and G. Both structures have an orthosteric binding pocket occupied by endogenous cholesterol as well as an intracellular allosteric site bound by the bitter tastant cmpd28.1, including a direct interaction with the α5 helix of G and G. Computational and biochemical studies validate both ligand interactions. Our functional analysis identified cholesterol as an orthosteric agonist and the bitter tastant cmpd28.1 as a positive allosteric modulator with direct agonist activity at TAS2R14. Moreover, the orthosteric pocket is connected to the allosteric site via an elongated cavity, which has a hydrophobic core rich in aromatic residues. Our findings provide insights into the ligand recognition of bitter taste receptors and suggest activities of TAS2R14 beyond bitter taste perception via intracellular allosteric tastants. | |||||||||
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 | emd_43650.map.gz | 91 MB | EMDBマップデータ形式 | |
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ヘッダ (付随情報) | emd-43650-v30.xml emd-43650.xml | 23.3 KB 23.3 KB | 表示 表示 | EMDBヘッダ |
画像 | emd_43650.png | 120.9 KB | ||
Filedesc metadata | emd-43650.cif.gz | 7.2 KB | ||
その他 | emd_43650_additional_1.map.gz emd_43650_half_map_1.map.gz emd_43650_half_map_2.map.gz | 97 MB 95.7 MB 95.7 MB | ||
アーカイブディレクトリ | http://ftp.pdbj.org/pub/emdb/structures/EMD-43650 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-43650 | HTTPS FTP |
-関連構造データ
-リンク
EMDBのページ | EMDB (EBI/PDBe) / EMDataResource |
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「今月の分子」の関連する項目 |
-マップ
ファイル | ダウンロード / ファイル: emd_43650.map.gz / 形式: CCP4 / 大きさ: 103 MB / タイプ: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||
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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: 0.876 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
-追加マップ: #1
ファイル | emd_43650_additional_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: #2
ファイル | emd_43650_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_43650_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 |
-試料の構成要素
-全体 : Ternary complex of TAS2R14 with Ggust heterotrimer
全体 | 名称: Ternary complex of TAS2R14 with Ggust heterotrimer |
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要素 |
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-超分子 #1: Ternary complex of TAS2R14 with Ggust heterotrimer
超分子 | 名称: Ternary complex of TAS2R14 with Ggust heterotrimer / タイプ: complex / ID: 1 / 親要素: 0 / 含まれる分子: #1-#5 |
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由来(天然) | 生物種: Homo sapiens (ヒト) |
-分子 #1: Guanine nucleotide-binding protein G(t) subunit alpha-3
分子 | 名称: Guanine nucleotide-binding protein G(t) subunit alpha-3 タイプ: protein_or_peptide / ID: 1 / コピー数: 1 / 光学異性体: LEVO |
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由来(天然) | 生物種: Homo sapiens (ヒト) |
分子量 | 理論値: 40.469027 KDa |
組換発現 | 生物種: Spodoptera frugiperda (ツマジロクサヨトウ) |
配列 | 文字列: MGSTVSAEDK AAAERSKMID KNLREDAERD ARTVKLLLLG AGESGKATIV KQQMKIIHKN GYSEQECMEF KAVIYSNTLQ SILAIVKAM TTLGIDYVNP RSAEDQRQLY AMANTLEDGG MTPQLAEVIK RLWRDPGIQA CFERASEYQL NDSAAYYLND L DRITASGY ...文字列: MGSTVSAEDK AAAERSKMID KNLREDAERD ARTVKLLLLG AGESGKATIV KQQMKIIHKN GYSEQECMEF KAVIYSNTLQ SILAIVKAM TTLGIDYVNP RSAEDQRQLY AMANTLEDGG MTPQLAEVIK RLWRDPGIQA CFERASEYQL NDSAAYYLND L DRITASGY VPNEQDVLHS RVKTTGIIET QFSFKDLHFR MFDVGAQRSE RKKWIHCFEG VTCIIFCAAL SAYDMVLVED EE VNRMHAS LKLFDSICNH KYFSDTSIVL FLNKKDIFQE KVTKVHLSIC FPEYTGPNTF EDAGNYIKNQ FLDLNLKKED KEI YSHMTC STDTQNVKFV FDAVTDIIIK ENLKDCGLF |
-分子 #2: Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1
分子 | 名称: Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1 タイプ: protein_or_peptide / ID: 2 / コピー数: 1 / 光学異性体: LEVO |
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由来(天然) | 生物種: Homo sapiens (ヒト) |
分子量 | 理論値: 42.936668 KDa |
組換発現 | 生物種: Spodoptera frugiperda (ツマジロクサヨトウ) |
配列 | 文字列: MHHHHHHLEV LFQGPGSSGS ELDQLRQEAE QLKNQIRDAR KACADATLSQ ITNNIDPVGR IQMRTRRTLR GHLAKIYAMH WGTDSRLLV SASQDGKLII WDSYTTNKVH AIPLRSSWVM TCAYAPSGNY VACGGLDNIC SIYNLKTREG NVRVSRELAG H TGYLSCCR ...文字列: MHHHHHHLEV LFQGPGSSGS ELDQLRQEAE QLKNQIRDAR KACADATLSQ ITNNIDPVGR IQMRTRRTLR GHLAKIYAMH WGTDSRLLV SASQDGKLII WDSYTTNKVH AIPLRSSWVM TCAYAPSGNY VACGGLDNIC SIYNLKTREG NVRVSRELAG H TGYLSCCR FLDDNQIVTS SGDTTCALWD IETGQQTTTF TGHTGDVMSL SLAPDTRLFV SGACDASAKL WDVREGMCRQ TF TGHESDI NAICFFPNGN AFATGSDDAT CRLFDLRADQ ELMTYSHDNI ICGITSVSFS KSGRLLLAGY DDFNCNVWDA LKA DRAGVL AGHDNRVSCL GVTDDGMAVA TGSWDSFLKI WNGGSGGGGS GGSSSGGGGS GGGGSGGSSS GGVSGWRLFK KISG GS UniProtKB: Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1 |
-分子 #3: Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2
分子 | 名称: Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2 タイプ: protein_or_peptide / ID: 3 / コピー数: 1 / 光学異性体: LEVO |
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由来(天然) | 生物種: Homo sapiens (ヒト) |
分子量 | 理論値: 7.861143 KDa |
組換発現 | 生物種: Spodoptera frugiperda (ツマジロクサヨトウ) |
配列 | 文字列: MASNNTASIA QARKLVEQLK MEANIDRIKV SKAAADLMAY CEAHAKEDPL LTPVPASENP FREKKFFCAI L UniProtKB: Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2 |
-分子 #4: scFv16
分子 | 名称: scFv16 / タイプ: protein_or_peptide / ID: 4 / コピー数: 1 / 光学異性体: LEVO |
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由来(天然) | 生物種: Mus musculus (ハツカネズミ) |
分子量 | 理論値: 28.668922 KDa |
組換発現 | 生物種: Spodoptera frugiperda (ツマジロクサヨトウ) |
配列 | 文字列: DVQLVESGGG LVQPGGSRKL SCSASGFAFS SFGMHWVRQA PEKGLEWVAY ISSGSGTIYY ADTVKGRFTI SRDDPKNTLF LQMTSLRSE DTAMYYCVRS IYYYGSSPFD FWGQGTTLTV SSGGGGSGGG GSGGGGSDIV MTQATSSVPV TPGESVSISC R SSKSLLHS ...文字列: DVQLVESGGG LVQPGGSRKL SCSASGFAFS SFGMHWVRQA PEKGLEWVAY ISSGSGTIYY ADTVKGRFTI SRDDPKNTLF LQMTSLRSE DTAMYYCVRS IYYYGSSPFD FWGQGTTLTV SSGGGGSGGG GSGGGGSDIV MTQATSSVPV TPGESVSISC R SSKSLLHS NGNTYLYWFL QRPGQSPQLL IYRMSNLASG VPDRFSGSGS GTAFTLTISR LEAEDVGVYY CMQHLEYPLT FG AGTKLEL KAAALEVLFQ GPHHHHHHHH |
-分子 #5: Taste receptor type 2 member 14,GPCR,Taste receptor type 2 member 14
分子 | 名称: Taste receptor type 2 member 14,GPCR,Taste receptor type 2 member 14 タイプ: protein_or_peptide / ID: 5 / コピー数: 1 / 光学異性体: LEVO |
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由来(天然) | 生物種: Homo sapiens (ヒト) |
分子量 | 理論値: 72.722641 KDa |
組換発現 | 生物種: Spodoptera frugiperda (ツマジロクサヨトウ) |
配列 | 文字列: DYKDDDDAKL QTMHHHHHHH HHHENLYFQG GTTMADLEDN WETLNDNLKV IEKADNAAQV KDALTKMRAA ALDAQKATPP KLEDKSPDS PEMKDFRHGF DILVGQIDDA LKLANEGKVK EAQAAAEQLK TTRNAYIQKY LGSTLEVLFQ GPMGGVIKSI F TFVLIVEF ...文字列: DYKDDDDAKL QTMHHHHHHH HHHENLYFQG GTTMADLEDN WETLNDNLKV IEKADNAAQV KDALTKMRAA ALDAQKATPP KLEDKSPDS PEMKDFRHGF DILVGQIDDA LKLANEGKVK EAQAAAEQLK TTRNAYIQKY LGSTLEVLFQ GPMGGVIKSI F TFVLIVEF IIGNLGNSFI ALVNCIDWVK GRKISSVDRI LTALAISRIS LVWLIFGSWC VSVFFPALFA TEKMFRMLTN IW TVINHFS VWLATGLGTF YFLKIANFSN SIFLYLKWRV KKVVLVLLLV TSVFLFLNIA LINIHINASI NGYRRNKTCS SDS SNFTRF SSLIVLTSTV FIFIPFTLSL AMFLLLIFSM WKHRKKMQHT VKISGDASTR AHRGVKSVIT FFLLYAIFSL SFFI SVWTS ERLEENLIIL SQVMGMAYPS CHSCVLILGN KKLRQASLSV LLWLRYMFKD GEPSGHKEFR ESSGSAGSAG SGGSG GGSG GGGSGGSSSG GVFTLEDFVG DWEQTAAYNL DQVLEQGGVS SLLQNLAVSV TPIQRIVRSG ENALKIDIHV IIPYEG LSA DQMAQIEEVF KVVYPVDDHH FKVILPYGTL VIDGVTPNML NYFGRPYEGI AVFDGKKITV TGTLWNGNKI IDERLIT PD GSMLFRVTIN S UniProtKB: Taste receptor type 2 member 14 |
-分子 #6: 4-methyl-N-[(2M)-2-(1H-tetrazol-5-yl)phenyl]-6-(trifluoromethyl)p...
分子 | 名称: 4-methyl-N-[(2M)-2-(1H-tetrazol-5-yl)phenyl]-6-(trifluoromethyl)pyrimidin-2-amine タイプ: ligand / ID: 6 / コピー数: 1 / 式: A1AEI |
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分子量 | 理論値: 321.261 Da |
-分子 #7: CHOLESTEROL
分子 | 名称: CHOLESTEROL / タイプ: ligand / ID: 7 / コピー数: 1 / 式: CLR |
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分子量 | 理論値: 386.654 Da |
Chemical component information | ChemComp-CLR: |
-実験情報
-構造解析
手法 | クライオ電子顕微鏡法 |
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解析 | 単粒子再構成法 |
試料の集合状態 | particle |
-試料調製
緩衝液 | pH: 7.5 |
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凍結 | 凍結剤: ETHANE-PROPANE / チャンバー内湿度: 100 % |
-電子顕微鏡法
顕微鏡 | FEI TALOS ARCTICA |
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撮影 | フィルム・検出器のモデル: GATAN K3 (6k x 4k) / 平均電子線量: 50.0 e/Å2 |
電子線 | 加速電圧: 200 kV / 電子線源: OTHER |
電子光学系 | 照射モード: SPOT SCAN / 撮影モード: OTHER / 最大 デフォーカス(公称値): 2.0 µm / 最小 デフォーカス(公称値): 1.0 µm |
実験機器 | モデル: Talos Arctica / 画像提供: FEI Company |