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Open data
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Basic information
Entry | Database: PDB / ID: 7fiy | ||||||||||||||||||||||||
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Title | Cryo-EM structure of the tirzepatide-bound human GIPR-Gs complex | ||||||||||||||||||||||||
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![]() | STRUCTURAL PROTEIN / Cryo-electron microscopy / G protein-coupled receptor / ligand recognition / receptor activation / unimolecular agonist | ||||||||||||||||||||||||
Function / homology | ![]() gastric inhibitory peptide receptor activity / glucagon family peptide binding / gastric inhibitory peptide signaling pathway / desensitization of G protein-coupled receptor signaling pathway / sensory perception of chemical stimulus / endocrine pancreas development / positive regulation of cAMP-mediated signaling / mu-type opioid receptor binding / response to fatty acid / corticotropin-releasing hormone receptor 1 binding ...gastric inhibitory peptide receptor activity / glucagon family peptide binding / gastric inhibitory peptide signaling pathway / desensitization of G protein-coupled receptor signaling pathway / sensory perception of chemical stimulus / endocrine pancreas development / positive regulation of cAMP-mediated signaling / mu-type opioid receptor binding / response to fatty acid / corticotropin-releasing hormone receptor 1 binding / G-protein activation / Activation of the phototransduction cascade / Glucagon-type ligand receptors / Thromboxane signalling through TP receptor / Sensory perception of sweet, bitter, and umami (glutamate) taste / G beta:gamma signalling through PI3Kgamma / G beta:gamma signalling through CDC42 / Cooperation of PDCL (PhLP1) and TRiC/CCT in G-protein beta folding / G protein-coupled peptide receptor activity / Activation of G protein gated Potassium channels / Inhibition of voltage gated Ca2+ channels via Gbeta/gamma subunits / Ca2+ pathway / G alpha (z) signalling events / Vasopressin regulates renal water homeostasis via Aquaporins / Glucagon-like Peptide-1 (GLP1) regulates insulin secretion / Adrenaline,noradrenaline inhibits insulin secretion / ADP signalling through P2Y purinoceptor 12 / G alpha (q) signalling events / Thrombin signalling through proteinase activated receptors (PARs) / G alpha (i) signalling events / 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 / Glucagon-type ligand receptors / Adrenaline,noradrenaline inhibits insulin secretion / G alpha (12/13) signalling events / G beta:gamma signalling through BTK / ADP signalling through P2Y purinoceptor 12 / alkylglycerophosphoethanolamine phosphodiesterase activity / Cooperation of PDCL (PhLP1) and TRiC/CCT in G-protein beta folding / Thrombin signalling through proteinase activated receptors (PARs) / Ca2+ pathway / G alpha (z) signalling events / Extra-nuclear estrogen signaling / beta-2 adrenergic receptor binding / G alpha (s) signalling events / G alpha (q) signalling events / photoreceptor outer segment membrane / G alpha (i) signalling events / Glucagon-like Peptide-1 (GLP1) regulates insulin secretion / spectrin binding / Vasopressin regulates renal water homeostasis via Aquaporins / peptide hormone binding / regulation of insulin secretion / photoreceptor outer segment / D1 dopamine receptor binding / response to axon injury / generation of precursor metabolites and energy / response to glucose / adenylate cyclase-activating adrenergic receptor signaling pathway / activation of adenylate cyclase activity / response to nutrient / cardiac muscle cell apoptotic process / insulin-like growth factor receptor binding / adenylate cyclase activator activity / ionotropic glutamate receptor binding / photoreceptor inner segment / response to calcium ion / G-protein beta/gamma-subunit complex binding / adenylate cyclase-modulating G protein-coupled receptor signaling pathway / positive regulation of insulin secretion / adenylate cyclase-activating G protein-coupled receptor signaling pathway / transmembrane signaling receptor activity / Glucagon-type ligand receptors / cellular response to catecholamine stimulus / sensory perception of taste / adenylate cyclase-activating dopamine receptor signaling pathway / cellular response to prostaglandin E stimulus / G-protein beta-subunit binding / heterotrimeric G-protein complex / signaling receptor complex adaptor activity / GTPase binding / retina development in camera-type eye / cellular response to hypoxia / phospholipase C-activating G protein-coupled receptor signaling pathway / positive regulation of cytosolic calcium ion concentration / cell body / G alpha (s) signalling events / cell population proliferation / cell surface receptor signaling pathway / G protein-coupled receptor signaling pathway / GTPase activity / dendrite Similarity search - Function | ||||||||||||||||||||||||
Biological species | ![]() ![]() ![]() ![]() ![]() synthetic construct (others) | ||||||||||||||||||||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.4 Å | ||||||||||||||||||||||||
![]() | Zhao, F.H. / Zhou, Q.T. / Cong, Z.T. / Hang, K.N. / Zou, X.Y. / Zhang, C. / Chen, Y. / Dai, A.T. / Liang, A.Y. / Ming, Q.Q. ...Zhao, F.H. / Zhou, Q.T. / Cong, Z.T. / Hang, K.N. / Zou, X.Y. / Zhang, C. / Chen, Y. / Dai, A.T. / Liang, A.Y. / Ming, Q.Q. / Wang, M. / Chen, L.N. / Xu, P.Y. / Chang, R.L. / Feng, W.B. / Xia, T. / Zhang, Y. / Wu, B.L. / Yang, D.H. / Zhao, L.H. / Xu, H.E. / Wang, M.W. | ||||||||||||||||||||||||
Funding support | ![]()
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![]() | ![]() Title: Structural insights into multiplexed pharmacological actions of tirzepatide and peptide 20 at the GIP, GLP-1 or glucagon receptors. Authors: Fenghui Zhao / Qingtong Zhou / Zhaotong Cong / Kaini Hang / Xinyu Zou / Chao Zhang / Yan Chen / Antao Dai / Anyi Liang / Qianqian Ming / Mu Wang / Li-Nan Chen / Peiyu Xu / Rulve Chang / ...Authors: Fenghui Zhao / Qingtong Zhou / Zhaotong Cong / Kaini Hang / Xinyu Zou / Chao Zhang / Yan Chen / Antao Dai / Anyi Liang / Qianqian Ming / Mu Wang / Li-Nan Chen / Peiyu Xu / Rulve Chang / Wenbo Feng / Tian Xia / Yan Zhang / Beili Wu / Dehua Yang / Lihua Zhao / H Eric Xu / Ming-Wei Wang / ![]() Abstract: Glucose homeostasis, regulated by glucose-dependent insulinotropic polypeptide (GIP), glucagon-like peptide-1 (GLP-1) and glucagon (GCG) is critical to human health. Several multi-targeting agonists ...Glucose homeostasis, regulated by glucose-dependent insulinotropic polypeptide (GIP), glucagon-like peptide-1 (GLP-1) and glucagon (GCG) is critical to human health. Several multi-targeting agonists at GIPR, GLP-1R or GCGR, developed to maximize metabolic benefits with reduced side-effects, are in clinical trials to treat type 2 diabetes and obesity. To elucidate the molecular mechanisms by which tirzepatide, a GIPR/GLP-1R dual agonist, and peptide 20, a GIPR/GLP-1R/GCGR triagonist, manifest their multiplexed pharmacological actions over monoagonists such as semaglutide, we determine cryo-electron microscopy structures of tirzepatide-bound GIPR and GLP-1R as well as peptide 20-bound GIPR, GLP-1R and GCGR. The structures reveal both common and unique features for the dual and triple agonism by illustrating key interactions of clinical relevance at the near-atomic level. Retention of glucagon function is required to achieve such an advantage over GLP-1 monotherapy. Our findings provide valuable insights into the structural basis of functional versatility of tirzepatide and peptide 20. | ||||||||||||||||||||||||
History |
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Structure visualization
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Structure viewer | Molecule: ![]() ![]() |
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Downloads & links
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Download
PDBx/mmCIF format | ![]() | 223.9 KB | Display | ![]() |
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PDB format | ![]() | 178.7 KB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
Others | ![]() |
-Validation report
Arichive directory | ![]() ![]() | HTTPS FTP |
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-Related structure data
Related structure data | ![]() 31606MC ![]() 7fimC ![]() 7finC ![]() 7v35C ![]() 7vabC ![]() 7vbhC ![]() 7vbiC M: map data used to model this data C: citing same article ( |
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Similar structure data |
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Links
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Assembly
Deposited unit | ![]()
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Components
-Guanine nucleotide-binding protein ... , 3 types, 3 molecules ABG
#3: Protein | Mass: 45743.441 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() ![]() |
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#4: Protein | Mass: 40226.992 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() ![]() |
#5: Protein | Mass: 7861.143 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() ![]() |
-Protein / Protein/peptide / Antibody / Non-polymers , 4 types, 9 molecules RPN![](data/chem/img/CLR.gif)
![](data/chem/img/CLR.gif)
#1: Protein | Mass: 64950.695 Da / Num. of mol.: 1 / Mutation: T345F Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() |
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#2: Protein/peptide | Mass: 4072.530 Da / Num. of mol.: 1 / Source method: obtained synthetically Details: At positon of K20 attached C20 diacid-gama-Glu-(AEEA)2, which is a C20 fatty diacid moiety connected to the lysine residue via a linker. And there is a NH2 at the C terminus of the peptide. Source: (synth.) synthetic construct (others) |
#6: Antibody | Mass: 15343.019 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) synthetic construct (others) / Production host: ![]() ![]() |
#7: Chemical | ChemComp-CLR / |
-Details
Has ligand of interest | N |
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-Experimental details
-Experiment
Experiment | Method: ELECTRON MICROSCOPY |
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EM experiment | Aggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction |
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Sample preparation
Component | Name: Cryo-EM structure of the tirzepatide-bound human GIPR-Gs complex Type: COMPLEX / Entity ID: #1-#6 / Source: RECOMBINANT |
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Source (natural) | Organism: ![]() |
Source (recombinant) | Organism: ![]() ![]() |
Buffer solution | pH: 7.4 |
Specimen | Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES |
Vitrification | Cryogen name: ETHANE |
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Electron microscopy imaging
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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Microscopy | Model: FEI TITAN KRIOS |
Electron gun | Electron source: OTHER / Accelerating voltage: 300 kV / Illumination mode: OTHER |
Electron lens | Mode: BRIGHT FIELD |
Image recording | Electron dose: 80 e/Å2 / Film or detector model: GATAN K3 (6k x 4k) |
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Processing
CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION |
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3D reconstruction | Resolution: 3.4 Å / Resolution method: DIFFRACTION PATTERN/LAYERLINES / Num. of particles: 511557 / Symmetry type: POINT |