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Yorodumi- EMDB-39376: Structure of human class T GPCR TAS2R14-Ggustducin complex with a... -
+Open data
-Basic information
Entry | Database: EMDB / ID: EMD-39376 | |||||||||
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Title | Structure of human class T GPCR TAS2R14-Ggustducin complex with agonist 28.1 | |||||||||
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Sample |
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Keywords | GPCR / TAS2R14 / Ggustducin / 28.1 / SIGNALING PROTEIN / TASTE RECEPTOR. | |||||||||
Function / homology | Function and homology information 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) / ganglioside catabolic process / oligosaccharide catabolic process / exo-alpha-(2->3)-sialidase activity / exo-alpha-(2->6)-sialidase activity / exo-alpha-(2->8)-sialidase activity / exo-alpha-sialidase ...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) / ganglioside catabolic process / oligosaccharide catabolic process / exo-alpha-(2->3)-sialidase activity / exo-alpha-(2->6)-sialidase activity / exo-alpha-(2->8)-sialidase activity / exo-alpha-sialidase / 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 activation / G protein-coupled acetylcholine receptor signaling pathway / 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 / ADP signalling through P2Y purinoceptor 12 / G beta:gamma signalling through BTK / Synthesis, secretion, and inactivation of Glucagon-like Peptide-1 (GLP-1) / Sensory perception of sweet, bitter, and umami (glutamate) taste / photoreceptor disc membrane / Adrenaline,noradrenaline inhibits insulin secretion / Glucagon-type ligand receptors / Vasopressin regulates renal water homeostasis via Aquaporins / G alpha (z) signalling events / cellular response to catecholamine stimulus / Glucagon-like Peptide-1 (GLP1) regulates insulin secretion / ADORA2B mediated anti-inflammatory cytokines production / sensory perception of taste / ADP signalling through P2Y purinoceptor 1 / adenylate cyclase-activating dopamine receptor signaling pathway / G beta:gamma signalling through PI3Kgamma / cellular response to prostaglandin E stimulus / Cooperation of PDCL (PhLP1) and TRiC/CCT in G-protein beta folding / GPER1 signaling / G-protein beta-subunit binding / Inactivation, recovery and regulation of the phototransduction cascade / 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 / phospholipase C-activating G protein-coupled receptor signaling pathway / Ca2+ pathway / G alpha (i) signalling events / fibroblast proliferation / G alpha (s) signalling events / G alpha (q) signalling events / cell population proliferation / Ras protein signal transduction / Extra-nuclear estrogen signaling / G protein-coupled receptor signaling pathway / lysosomal membrane / intracellular membrane-bounded organelle / GTPase activity / synapse / protein-containing complex binding / signal transduction / extracellular exosome / membrane / metal ion binding / plasma membrane / cytoplasm / cytosol Similarity search - Function | |||||||||
Biological species | Homo sapiens (human) / synthetic construct (others) | |||||||||
Method | single particle reconstruction / cryo EM / Resolution: 2.99 Å | |||||||||
Authors | Hu XL / Wu LJ / Hua T / Liu ZJ | |||||||||
Funding support | 1 items
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Citation | Journal: Nature / Year: 2024 Title: Bitter taste TAS2R14 activation by intracellular tastants and cholesterol. Authors: Xiaolong Hu / Weizhen Ao / Mingxin Gao / Lijie Wu / Yuan Pei / Shenhui Liu / Yiran Wu / Fei Zhao / Qianqian Sun / Junlin Liu / Longquan Jiang / Xin Wang / Yan Li / Qiwen Tan / Jie Cheng / ...Authors: Xiaolong Hu / Weizhen Ao / Mingxin Gao / Lijie Wu / Yuan Pei / Shenhui Liu / Yiran Wu / Fei Zhao / Qianqian Sun / Junlin Liu / Longquan Jiang / Xin Wang / Yan Li / Qiwen Tan / Jie Cheng / Fan Yang / Chi Yang / Jinpeng Sun / Tian Hua / Zhi-Jie Liu / Abstract: Bitter taste receptors, particularly TAS2R14, play central roles in discerning a wide array of bitter substances, ranging from dietary components to pharmaceutical agents. TAS2R14 is also widely ...Bitter taste receptors, particularly TAS2R14, play central roles in discerning a wide array of bitter substances, ranging from dietary components to pharmaceutical agents. TAS2R14 is also widely expressed in extragustatory tissues, suggesting its extra roles in diverse physiological processes and potential therapeutic applications. Here we present cryogenic electron microscopy structures of TAS2R14 in complex with aristolochic acid, flufenamic acid and compound 28.1, coupling with different G-protein subtypes. Uniquely, a cholesterol molecule is observed occupying what is typically an orthosteric site in class A G-protein-coupled receptors. The three potent agonists bind, individually, to the intracellular pockets, suggesting a distinct activation mechanism for this receptor. Comprehensive structural analysis, combined with mutagenesis and molecular dynamic simulation studies, elucidate the broad-spectrum ligand recognition and activation of the receptor by means of intricate multiple ligand-binding sites. Our study also uncovers the specific coupling modes of TAS2R14 with gustducin and G proteins. These findings should be instrumental in advancing knowledge of bitter taste perception and its broader implications in sensory biology and drug discovery. | |||||||||
History |
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-Structure visualization
-Downloads & links
-EMDB archive
Map data | EMDB map data format | |||
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Header (meta data) | EMDB header | |||
Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-39376 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-39376 | HTTPS FTP |
-Validation report
Summary document | emd_39376_validation.pdf.gz | 860.7 KB | Display | EMDB validaton report |
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Full document | emd_39376_full_validation.pdf.gz | 860.2 KB | Display | |
Data in XML | emd_39376_validation.xml.gz | 15.8 KB | Display | |
Data in CIF | emd_39376_validation.cif.gz | 20.3 KB | Display | |
Arichive directory | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-39376 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-39376 | HTTPS FTP |
-Related structure data
Related structure data | 8ykyMC 38580 38582 38583 38584 38586 38587 38588 8xqlC 8xqnC 8xqoC 8xqpC 8xqrC 8xqsC 8xqtC M: atomic model generated by this map C: citing same article (ref.) |
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Similar structure data | Similarity search - Function & homologyF&H Search |
-Links
EMDB pages | EMDB (EBI/PDBe) / EMDataResource |
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Related items in Molecule of the Month |
-Map
File | Download / File: emd_39376.map.gz / Format: CCP4 / Size: 64 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||
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Voxel size | X=Y=Z: 1.04 Å | ||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||
Details | EMDB XML:
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-Supplemental data
-Sample components
-Entire : Structure of human class T GPCR TAS2R14-Ggustducin complex with a...
Entire | Name: Structure of human class T GPCR TAS2R14-Ggustducin complex with agonist 28.1 |
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Components |
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-Supramolecule #1: Structure of human class T GPCR TAS2R14-Ggustducin complex with a...
Supramolecule | Name: Structure of human class T GPCR TAS2R14-Ggustducin complex with agonist 28.1 type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#5 |
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Source (natural) | Organism: Homo sapiens (human) |
-Macromolecule #1: G alpha gustducin protein
Macromolecule | Name: G alpha gustducin protein / type: protein_or_peptide / ID: 1 / Number of copies: 1 / Enantiomer: LEVO |
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Source (natural) | Organism: Homo sapiens (human) |
Molecular weight | Theoretical: 42.373035 KDa |
Recombinant expression | Organism: Spodoptera frugiperda (fall armyworm) |
Sequence | String: MDYKDDDDKE NLYFQMGCTL SAEDKAAVER SKMIDRNLQE DAERDARTVK LLLLGAGESG KSTIVKQMKI IHKNGYSEQE CMEFKAVIY SNTLQSILAI VKAMTTLGID YVNPRSAEDQ RQLYAMANTL EDGGMTPQLA EVIKRLWRDP GIQACFERAS E YQLNDSAA ...String: MDYKDDDDKE NLYFQMGCTL SAEDKAAVER SKMIDRNLQE DAERDARTVK LLLLGAGESG KSTIVKQMKI IHKNGYSEQE CMEFKAVIY SNTLQSILAI VKAMTTLGID YVNPRSAEDQ RQLYAMANTL EDGGMTPQLA EVIKRLWRDP GIQACFERAS E YQLNDSAA YYLNDLDRIT ASGYVPNEQD VLHSRVKTTG IIETQFSFKD LHFRMFDVGG QRSERKKWIH CFEGVTCIIF CA ALSAYDM VLVEDEEVNR MHESLHLFNS ICNHKYFSTT SIILFLNKKD IFQEKVTKVH LSICFPEYTG PNTFEDAGNY IKN QFLDLN LKKEDKEIYS HMTCATDTQN VKFVFDAVTD IIIKENLKDC GLF |
-Macromolecule #2: Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1
Macromolecule | Name: Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1 type: protein_or_peptide / ID: 2 / Number of copies: 1 / Enantiomer: LEVO |
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Source (natural) | Organism: Homo sapiens (human) |
Molecular weight | Theoretical: 39.728426 KDa |
Recombinant expression | Organism: Spodoptera frugiperda (fall armyworm) |
Sequence | String: MSELDQLRQE AEQLKNQIRD ARKACADATL SQITNNIDPV GRIQMRTRRT LRGHLAKIYA MHWGTDSRLL VSASQDGKLI IWDSYTTNK VHAIPLRSSW VMTCAYAPSG NYVACGGLDN ICSIYNLKTR EGNVRVSREL AGHTGYLSCC RFLDDNQIVT S SGDTTCAL ...String: MSELDQLRQE AEQLKNQIRD ARKACADATL SQITNNIDPV GRIQMRTRRT LRGHLAKIYA MHWGTDSRLL VSASQDGKLI IWDSYTTNK VHAIPLRSSW VMTCAYAPSG NYVACGGLDN ICSIYNLKTR EGNVRVSREL AGHTGYLSCC RFLDDNQIVT S SGDTTCAL WDIETGQQTT TFTGHTGDVM SLSLAPDTRL FVSGACDASA KLWDVREGMC RQTFTGHESD INAICFFPNG NA FATGSDD ATCRLFDLRA DQELMTYSHD NIICGITSVS FSKSGRLLLA GYDDFNCNVW DALKADRAGV LAGHDNRVSC LGV TDDGMA VATGSWDSFL KIWNGSSGGG GSGGGGSSGV SGWRLFKKIS UniProtKB: Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1 |
-Macromolecule #3: Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2
Macromolecule | Name: Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2 type: protein_or_peptide / ID: 3 / Number of copies: 1 / Enantiomer: LEVO |
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Source (natural) | Organism: Homo sapiens (human) |
Molecular weight | Theoretical: 7.861143 KDa |
Recombinant expression | Organism: Spodoptera frugiperda (fall armyworm) |
Sequence | String: MASNNTASIA QARKLVEQLK MEANIDRIKV SKAAADLMAY CEAHAKEDPL LTPVPASENP FREKKFFCAI L UniProtKB: Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2 |
-Macromolecule #4: ScFv16 protein
Macromolecule | Name: ScFv16 protein / type: protein_or_peptide / ID: 4 / Number of copies: 1 / Enantiomer: LEVO |
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Source (natural) | Organism: Homo sapiens (human) |
Molecular weight | Theoretical: 30.668211 KDa |
Recombinant expression | Organism: Spodoptera frugiperda (fall armyworm) |
Sequence | String: MVSAIVLYVL LAAAAHSAFA DVQLVESGGG LVQPGGSRKL SCSASGFAFS SFGMHWVRQA PEKGLEWVAY ISSGSGTIYY ADTVKGRFT ISRDDPKNTL FLQMTSLRSE DTAMYYCVRS IYYYGSSPFD FWGQGTTLTV SSGGGGSGGG GSGGGGSDIV M TQATSSVP ...String: MVSAIVLYVL LAAAAHSAFA DVQLVESGGG LVQPGGSRKL SCSASGFAFS SFGMHWVRQA PEKGLEWVAY ISSGSGTIYY ADTVKGRFT ISRDDPKNTL FLQMTSLRSE DTAMYYCVRS IYYYGSSPFD FWGQGTTLTV SSGGGGSGGG GSGGGGSDIV M TQATSSVP VTPGESVSIS CRSSKSLLHS NGNTYLYWFL QRPGQSPQLL IYRMSNLASG VPDRFSGSGS GTAFTLTISR LE AEDVGVY YCMQHLEYPL TFGAGTKLEL KAAAENLYFQ SHHHHHHHH |
-Macromolecule #5: exo-alpha-sialidase,Taste receptor type 2 member 14,LgBit
Macromolecule | Name: exo-alpha-sialidase,Taste receptor type 2 member 14,LgBit type: protein_or_peptide / ID: 5 / Number of copies: 1 / Enantiomer: LEVO / EC number: exo-alpha-sialidase |
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Source (natural) | Organism: synthetic construct (others) |
Molecular weight | Theoretical: 110.840023 KDa |
Recombinant expression | Organism: Spodoptera frugiperda (fall armyworm) |
Sequence | String: MKTIIALSYI FCLVFADYKD DDDAHHHHHH HHHHENLYFQ SGRAVEGAVK TEPVDLFHPG FLNSSNYRIP ALFKTKEGTL IASIDARRH GGADAPNNDI DTAVRRSEDG GKTWDEGQII MDYPDKSSVI DTTLIQDDET GRIFLLVTHF PSKYGFWNAG L GSGFKNID ...String: MKTIIALSYI FCLVFADYKD DDDAHHHHHH HHHHENLYFQ SGRAVEGAVK TEPVDLFHPG FLNSSNYRIP ALFKTKEGTL IASIDARRH GGADAPNNDI DTAVRRSEDG GKTWDEGQII MDYPDKSSVI DTTLIQDDET GRIFLLVTHF PSKYGFWNAG L GSGFKNID GKEYLCLYDS SGKEFTVREN VVYDKDSNKT EYTTNALGDL FKNGTKIDNI NSSTAPLKAK GTSYINLVYS DD DGKTWSE PQNINFQVKK DWMKFLGIAP GRGIQIKNGE HKGRIVVPVY YTNEKGKQSS AVIYSDDSGK NWTIGESPND NRK LENGKI INSKTLSDDA PQLTECQVVE MPNGQLKLFM RNLSGYLNIA TSFDGGATWD ETVEKDTNVL EPYCQLSVIN YSQK VDGKD AVIFSNPNAR SRSNGTVRIG LINQVGTYEN GEPKYEFDWK YNKLVKPGYY AYSCLTELSN GNIGLLYEGT PSEEM SYIE MNLKYLESGA NKGSAGSGGV IKSIFTFVLI VEFIIGNLGN SFIALVNCID WVKGRKISSV DRILTALAIS RISLVW LIF GSWCVSVFFP ALFATEKMFR MLTNIWTVIN HFSVWLATGL GTFYFLKIAN FSNSIFLYLK WRVKKVVLVL LLVTSVF LF LNIALINIHI NASINGYRRN KTCSSDSSNF TRFSSLIVLT STVFIFIPFT LSLAMFLLLI FSMWKHRKKM QHTVKISG D ASTKAHRGVK SVITFFLLYA IFSLSFFISV WTSERLEENL IILSQVMGMA YPSCHSCVLI LGNKKLRQAS LSVLLWLRY MFKDGEPSGH KEFRESSGSG SSGSGSSGSG SSVFTLEDFV GDWEQTAAYN LDQVLEQGGV SSLLQNLAVS VTPIQRIVRS GENALKIDI HVIIPYEGLS ADQMAQIEEV FKVVYPVDDH HFKVILPYGT LVIDGVTPNM LNYFGRPYEG IAVFDGKKIT V TGTLWNGN KIIDERLITP DGSMLFRVTI NS UniProtKB: exo-alpha-sialidase, Taste receptor type 2 member 14 |
-Macromolecule #6: 4-methyl-N-[(2M)-2-(1H-tetrazol-5-yl)phenyl]-6-(trifluoromethyl)p...
Macromolecule | Name: 4-methyl-N-[(2M)-2-(1H-tetrazol-5-yl)phenyl]-6-(trifluoromethyl)pyrimidin-2-amine type: ligand / ID: 6 / Number of copies: 1 / Formula: A1AEI |
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Molecular weight | Theoretical: 321.261 Da |
-Macromolecule #7: CHOLESTEROL
Macromolecule | Name: CHOLESTEROL / type: ligand / ID: 7 / Number of copies: 1 / Formula: CLR |
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Molecular weight | Theoretical: 386.654 Da |
Chemical component information | ChemComp-CLR: |
-Experimental details
-Structure determination
Method | cryo EM |
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Processing | single particle reconstruction |
Aggregation state | particle |
-Sample preparation
Buffer | pH: 7.5 |
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Vitrification | Cryogen name: ETHANE |
-Electron microscopy
Microscope | FEI TITAN KRIOS |
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Image recording | Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k) / Average electron dose: 57.69 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN |
Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: 2.0 µm / Nominal defocus min: 1.2 µm |
Experimental equipment | Model: Titan Krios / Image courtesy: FEI Company |
-Image processing
Startup model | Type of model: NONE |
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Final reconstruction | Resolution.type: BY AUTHOR / Resolution: 2.99 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 174503 |
Initial angle assignment | Type: COMMON LINE |
Final angle assignment | Type: MAXIMUM LIKELIHOOD |