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- EMDB-32268: Cryo-EM structure of the ghrelin-bound human ghrelin receptor-Go ... -
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Open data
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Basic information
Entry | Database: EMDB / ID: EMD-32268 | |||||||||
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Title | Cryo-EM structure of the ghrelin-bound human ghrelin receptor-Go complex | |||||||||
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Function / homology | ![]() positive regulation of bone development / positive regulation of gastric mucosal blood circulation / ghrelin receptor binding / negative regulation of locomotion / cortisol secretion / growth hormone secretagogue receptor activity / regulation of hindgut contraction / growth hormone-releasing hormone activity / negative regulation of circadian sleep/wake cycle, REM sleep / regulation of growth hormone secretion ...positive regulation of bone development / positive regulation of gastric mucosal blood circulation / ghrelin receptor binding / negative regulation of locomotion / cortisol secretion / growth hormone secretagogue receptor activity / regulation of hindgut contraction / growth hormone-releasing hormone activity / negative regulation of circadian sleep/wake cycle, REM sleep / regulation of growth hormone secretion / positive regulation of small intestinal transit / regulation of response to food / negative regulation of locomotion involved in locomotory behavior / growth hormone-releasing hormone receptor activity / regulation of gastric motility / response to follicle-stimulating hormone / regulation of transmission of nerve impulse / positive regulation of circadian sleep/wake cycle, non-REM sleep / positive regulation of cortisol secretion / positive regulation of corticotropin secretion / positive regulation of growth rate / ghrelin secretion / neuronal dense core vesicle lumen / gastric acid secretion / positive regulation of appetite / growth hormone secretion / negative regulation of norepinephrine secretion / positive regulation of small intestine smooth muscle contraction / negative regulation of macrophage apoptotic process / positive regulation of eating behavior / positive regulation of growth hormone secretion / adult feeding behavior / positive regulation of growth hormone receptor signaling pathway / negative regulation of appetite / mu-type opioid receptor binding / corticotropin-releasing hormone receptor 1 binding / actin polymerization or depolymerization / positive regulation of multicellular organism growth / cellular response to thyroid hormone stimulus / cartilage development / vesicle docking involved in exocytosis / response to growth hormone / regulation of postsynapse organization / positive regulation of insulin-like growth factor receptor signaling pathway / positive regulation of synapse assembly / positive regulation of vascular endothelial cell proliferation / response to L-glutamate / G protein-coupled dopamine receptor signaling pathway / negative regulation of interleukin-1 beta production / cellular response to insulin-like growth factor stimulus / response to food / positive regulation of fatty acid metabolic process / response to dexamethasone / regulation of synapse assembly / regulation of heart contraction / parallel fiber to Purkinje cell synapse / positive regulation of sprouting angiogenesis / regulation of neurotransmitter receptor localization to postsynaptic specialization membrane / negative regulation of endothelial cell proliferation / dendrite development / negative regulation of interleukin-6 production / peptide hormone binding / protein tyrosine kinase activator activity / decidualization / negative regulation of tumor necrosis factor production / response to electrical stimulus / Synthesis, secretion, and deacylation of Ghrelin / postsynaptic modulation of chemical synaptic transmission / positive regulation of insulin secretion involved in cellular response to glucose stimulus / synapse assembly / response to hormone / hormone-mediated signaling pathway / positive regulation of adipose tissue development / G protein-coupled serotonin receptor binding / adenylate cyclase regulator activity / adenylate cyclase-inhibiting serotonin receptor signaling pathway / muscle contraction / insulin-like growth factor receptor signaling pathway / negative regulation of angiogenesis / Peptide ligand-binding receptors / excitatory postsynaptic potential / locomotory behavior / synaptic membrane / G protein-coupled receptor binding / negative regulation of insulin secretion / G protein-coupled receptor activity / GABA-ergic synapse / positive regulation of insulin secretion / adenylate cyclase-modulating G protein-coupled receptor signaling pathway / negative regulation of inflammatory response / G-protein beta/gamma-subunit complex binding / response to estrogen / Schaffer collateral - CA1 synapse / 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 / cellular response to insulin stimulus Similarity search - Function | |||||||||
Biological species | ![]() | |||||||||
Method | single particle reconstruction / cryo EM / Resolution: 2.8 Å | |||||||||
![]() | Qin J / Ming Q / Ji S / Mao C / Shen D / Zhang Y | |||||||||
Funding support | 1 items
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![]() | ![]() Title: Molecular mechanism of agonism and inverse agonism in ghrelin receptor. Authors: Jiao Qin / Ye Cai / Zheng Xu / Qianqian Ming / Su-Yu Ji / Chao Wu / Huibing Zhang / Chunyou Mao / Dan-Dan Shen / Kunio Hirata / Yanbin Ma / Wei Yan / Yan Zhang / Zhenhua Shao / ![]() ![]() Abstract: Much effort has been invested in the investigation of the structural basis of G protein-coupled receptors (GPCRs) activation. Inverse agonists, which can inhibit GPCRs with constitutive activity, are ...Much effort has been invested in the investigation of the structural basis of G protein-coupled receptors (GPCRs) activation. Inverse agonists, which can inhibit GPCRs with constitutive activity, are considered useful therapeutic agents, but the molecular mechanism of such ligands remains insufficiently understood. Here, we report a crystal structure of the ghrelin receptor bound to the inverse agonist PF-05190457 and a cryo-electron microscopy structure of the active ghrelin receptor-Go complex bound to the endogenous agonist ghrelin. Our structures reveal a distinct binding mode of the inverse agonist PF-05190457 in the ghrelin receptor, different from the binding mode of agonists and neutral antagonists. Combining the structural comparisons and cellular function assays, we find that a polar network and a notable hydrophobic cluster are required for receptor activation and constitutive activity. Together, our study provides insights into the detailed mechanism of ghrelin receptor binding to agonists and inverse agonists, and paves the way to design specific ligands targeting ghrelin receptors. | |||||||||
History |
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Structure visualization
Movie |
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Structure viewer | EM map: ![]() ![]() ![]() |
Supplemental images |
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Downloads & links
-EMDB archive
Map data | ![]() | 25.3 MB | ![]() | |
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Header (meta data) | ![]() ![]() | 19.3 KB 19.3 KB | Display Display | ![]() |
Images | ![]() | 82.8 KB | ||
Archive directory | ![]() ![]() | HTTPS FTP |
-Validation report
Summary document | ![]() | 472.5 KB | Display | ![]() |
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Full document | ![]() | 472 KB | Display | |
Data in XML | ![]() | 5.5 KB | Display | |
Data in CIF | ![]() | 6.2 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 7w2zMC ![]() 7f83C M: atomic model generated by this map C: citing same article ( |
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Similar structure data |
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Links
EMDB pages | ![]() ![]() |
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Related items in Molecule of the Month |
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Map
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Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 1.014 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
CCP4 map header:
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-Supplemental data
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Sample components
+Entire : Cryo-EM structure of the ghrelin-bound human ghrelin receptor-Go ...
+Supramolecule #1: Cryo-EM structure of the ghrelin-bound human ghrelin receptor-Go ...
+Supramolecule #2: Guanine nucleotide-binding protein G(o) subunit alpha, Growth hor...
+Supramolecule #3: Guanine nucleotide-binding protein
+Supramolecule #4: ScFv16
+Supramolecule #5: Appetite-regulating hormone
+Macromolecule #1: Guanine nucleotide-binding protein G(o) subunit alpha
+Macromolecule #2: Growth hormone secretagogue receptor type 1
+Macromolecule #3: Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2
+Macromolecule #4: ScFv16
+Macromolecule #5: Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1
+Macromolecule #6: Appetite-regulating hormone
+Macromolecule #7: CHOLESTEROL
-Experimental details
-Structure determination
Method | cryo EM |
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![]() | single particle reconstruction |
Aggregation state | particle |
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Sample preparation
Buffer | pH: 7.5 |
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Vitrification | Cryogen name: ETHANE |
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Electron microscopy
Microscope | FEI TITAN KRIOS |
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Image recording | Film or detector model: GATAN K2 SUMMIT (4k x 4k) / Average electron dose: 62.24 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: ![]() |
Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: 2.0 µm / Nominal defocus min: 0.5 µm |
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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Image processing
Startup model | Type of model: PDB ENTRY PDB model - PDB ID: |
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Final reconstruction | Resolution.type: BY AUTHOR / Resolution: 2.8 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 230306 |
Initial angle assignment | Type: RANDOM ASSIGNMENT |
Final angle assignment | Type: MAXIMUM LIKELIHOOD |