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Yorodumi- EMDB-24334: cryo-EM of human Gastric inhibitory polypeptide receptor GIPR bou... -
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Basic information
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| Title | cryo-EM of human Gastric inhibitory polypeptide receptor GIPR bound to GIP | |||||||||
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Keywords | Class B GPCR / glucagon-like peptide-1 receptor / G protein nucleotide exchange factor. / MEMBRANE PROTEIN | |||||||||
| Function / homology | Function and homology informationgastric inhibitory polypeptide receptor binding / gastric inhibitory peptide receptor activity / glucagon family peptide binding / gastric inhibitory peptide signaling pathway / glucagon receptor binding / endocrine pancreas development / regulation of fatty acid biosynthetic process / Synthesis, secretion, and inactivation of Glucose-dependent Insulinotropic Polypeptide (GIP) / response to fatty acid / negative regulation of adenylate cyclase activity ...gastric inhibitory polypeptide receptor binding / gastric inhibitory peptide receptor activity / glucagon family peptide binding / gastric inhibitory peptide signaling pathway / glucagon receptor binding / endocrine pancreas development / regulation of fatty acid biosynthetic process / Synthesis, secretion, and inactivation of Glucose-dependent Insulinotropic Polypeptide (GIP) / response to fatty acid / negative regulation of adenylate cyclase activity / desensitization of G protein-coupled receptor signaling pathway / G protein-coupled peptide receptor activity / GTP metabolic process / response to starvation / regulation of insulin secretion / adenylate cyclase-activating G protein-coupled bile acid receptor signaling pathway / adenylate cyclase-activating serotonin receptor signaling pathway / exploration behavior / peptide hormone binding / regulation of skeletal muscle contraction / positive regulation of macroautophagy / PKA activation in glucagon signalling / hair follicle placode formation / developmental growth / intracellular transport / D1 dopamine receptor binding / response to glucose / response to axon injury / vascular endothelial cell response to laminar fluid shear stress / renal water homeostasis / activation of adenylate cyclase activity / Hedgehog 'off' state / adenylate cyclase-activating adrenergic receptor signaling pathway / cellular response to acidic pH / Adenylate cyclase inhibitory pathway / response to nutrient / cellular response to glucagon stimulus / sensory perception of pain / intracellular glucose homeostasis / adenylate cyclase activator activity / positive regulation of insulin secretion involved in cellular response to glucose stimulus / trans-Golgi network membrane / adult locomotory behavior / generation of precursor metabolites and energy / negative regulation of inflammatory response to antigenic stimulus / response to prostaglandin E / hormone activity / bone development / response to calcium ion / G protein-coupled receptor binding / platelet aggregation / cognition / adenylate cyclase-modulating G protein-coupled receptor signaling pathway / G-protein beta/gamma-subunit complex binding / centriolar satellite / memory / 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 / positive regulation of insulin secretion / 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 / G beta:gamma signalling through CDC42 / Prostacyclin signalling through prostacyclin receptor / G beta:gamma signalling through BTK / Synthesis, secretion, and inactivation of Glucagon-like Peptide-1 (GLP-1) / photoreceptor disc membrane / ADP signalling through P2Y purinoceptor 12 / sensory perception of smell / 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 / transmembrane signaling receptor activity / 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-protein beta-subunit binding / G alpha (12/13) signalling events / Inactivation, recovery and regulation of the phototransduction cascade / positive regulation of cold-induced thermogenesis / extracellular vesicle / sensory perception of taste / adenylate cyclase-activating G protein-coupled receptor signaling pathway / sperm principal piece Similarity search - Function | |||||||||
| Biological species | Homo sapiens (human) / ![]() ![]() | |||||||||
| Method | single particle reconstruction / cryo EM / Resolution: 3.24 Å | |||||||||
Authors | Sun B / Kobilka BK | |||||||||
Citation | Journal: Proc Natl Acad Sci U S A / Year: 2022Title: Structural determinants of dual incretin receptor agonism by tirzepatide. Authors: Bingfa Sun / Francis S Willard / Dan Feng / Jorge Alsina-Fernandez / Qi Chen / Michal Vieth / Joseph D Ho / Aaron D Showalter / Cynthia Stutsman / Liyun Ding / Todd M Suter / James D Dunbar ...Authors: Bingfa Sun / Francis S Willard / Dan Feng / Jorge Alsina-Fernandez / Qi Chen / Michal Vieth / Joseph D Ho / Aaron D Showalter / Cynthia Stutsman / Liyun Ding / Todd M Suter / James D Dunbar / John W Carpenter / Faiz Ahmad Mohammed / Eitaro Aihara / Robert A Brown / Ana B Bueno / Paul J Emmerson / Julie S Moyers / Tong Sun Kobilka / Matthew P Coghlan / Brian K Kobilka / Kyle W Sloop / ![]() Abstract: SignificanceTirzepatide is a dual agonist of the glucose-dependent insulinotropic polypeptide receptor (GIPR) and the glucagon-like peptide-1 receptor (GLP-1R), which are incretin receptors that ...SignificanceTirzepatide is a dual agonist of the glucose-dependent insulinotropic polypeptide receptor (GIPR) and the glucagon-like peptide-1 receptor (GLP-1R), which are incretin receptors that regulate carbohydrate metabolism. This investigational agent has proven superior to selective GLP-1R agonists in clinical trials in subjects with type 2 diabetes mellitus. Intriguingly, although tirzepatide closely resembles native GIP in how it activates the GIPR, it differs markedly from GLP-1 in its activation of the GLP-1R, resulting in less agonist-induced receptor desensitization. We report how cryogenic electron microscopy and molecular dynamics simulations inform the structural basis for the unique pharmacology of tirzepatide. These studies reveal the extent to which fatty acid modification, combined with amino acid sequence, determines the mode of action of a multireceptor agonist. | |||||||||
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Structure visualization
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Downloads & links
-EMDB archive
| Map data | emd_24334.map.gz | 226.1 MB | EMDB map data format | |
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| Header (meta data) | emd-24334-v30.xml emd-24334.xml | 20.7 KB 20.7 KB | Display Display | EMDB header |
| Images | emd_24334.png | 106.1 KB | ||
| Filedesc metadata | emd-24334.cif.gz | 7.3 KB | ||
| Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-24334 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-24334 | HTTPS FTP |
-Related structure data
| Related structure data | ![]() 7ra3MC ![]() 7rbtC ![]() 7rg9C ![]() 7rgpC M: atomic model generated by this map C: citing same article ( |
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| Similar structure data | Similarity search - Function & homology F&H Search |
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Links
| EMDB pages | EMDB (EBI/PDBe) / EMDataResource |
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| Related items in Molecule of the Month |
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Map
| File | Download / File: emd_24334.map.gz / Format: CCP4 / Size: 244.1 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||
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| Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||
| Voxel size | X=Y=Z: 0.648 Å | ||||||||||||||||||||||||||||||||||||
| Density |
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| Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||
| Details | EMDB XML:
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-Supplemental data
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Sample components
+Entire : cryo-EM of human Gastric inhibitory polypeptide receptor GIPR bou...
+Supramolecule #1: cryo-EM of human Gastric inhibitory polypeptide receptor GIPR bou...
+Supramolecule #2: Gastric inhibitory polypeptide GIP bound to GIP receptor GIPR
+Supramolecule #3: Trimeric stimulatory G protein
+Macromolecule #1: Guanine nucleotide-binding protein G(i) subunit alpha-3,Isoform G...
+Macromolecule #2: Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1
+Macromolecule #3: Single-chain variable fragment 16
+Macromolecule #4: Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2
+Macromolecule #5: Nanobody 35
+Macromolecule #6: Gastric inhibitory polypeptide
+Macromolecule #7: Gastric inhibitory polypeptide receptor
-Experimental details
-Structure determination
| Method | cryo EM |
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Processing | single particle reconstruction |
| Aggregation state | particle |
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Sample preparation
| Concentration | 10 mg/mL |
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| Buffer | pH: 7.5 |
| Vitrification | Cryogen name: ETHANE / Chamber humidity: 100 % / Chamber temperature: 293 K / Instrument: FEI VITROBOT MARK IV |
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Electron microscopy
| Microscope | FEI TITAN KRIOS |
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| Specialist optics | Energy filter - Name: GIF Quantum LS / Energy filter - Slit width: 20 eV |
| Image recording | Film or detector model: GATAN K3 (6k x 4k) / Detector mode: COUNTING / Average exposure time: 1.5 sec. / Average electron dose: 53.6 e/Å2 |
| Electron beam | Acceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN |
| Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Cs: 2.7 mm |
| Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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Image processing
| Startup model | Type of model: EMDB MAP EMDB ID: |
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| Final reconstruction | Resolution.type: BY AUTHOR / Resolution: 3.24 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: RELION (ver. 3.0) / Number images used: 145195 |
| Initial angle assignment | Type: NOT APPLICABLE |
| Final angle assignment | Type: NOT APPLICABLE |
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Keywords
Homo sapiens (human)
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Trichoplusia ni (cabbage looper)
FIELD EMISSION GUN


