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- PDB-7f9y: ghrelin-bound ghrelin receptor in complex with Gq -

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Basic information

Entry
Database: PDB / ID: 7f9y
Titleghrelin-bound ghrelin receptor in complex with Gq
Components
  • (Guanine nucleotide-binding protein ...) x 2
  • Engineered G-alpha-q subunit
  • Ghrelin-28
  • NB35
  • Soluble cytochrome b562
KeywordsMEMBRANE PROTEIN / ghrelin / GPCR / Gq
Function / homology
Function and homology information


ghrelin receptor binding / negative regulation of locomotion / positive regulation of bone development / positive regulation of gastric mucosal blood circulation / cortisol secretion / growth hormone-releasing hormone activity / negative regulation of circadian sleep/wake cycle, REM sleep / positive regulation of circadian sleep/wake cycle, non-REM sleep / positive regulation of small intestinal transit / regulation of response to food ...ghrelin receptor binding / negative regulation of locomotion / positive regulation of bone development / positive regulation of gastric mucosal blood circulation / cortisol secretion / growth hormone-releasing hormone activity / negative regulation of circadian sleep/wake cycle, REM sleep / positive regulation of circadian sleep/wake cycle, non-REM sleep / positive regulation of small intestinal transit / regulation of response to food / regulation of gastric motility / regulation of transmission of nerve impulse / positive regulation of corticotropin secretion / neuronal dense core vesicle lumen / positive regulation of cortisol secretion / gastric acid secretion / positive regulation of appetite / positive regulation of growth rate / growth hormone secretion / positive regulation of eating behavior / positive regulation of small intestine smooth muscle contraction / positive regulation of growth hormone secretion / adult feeding behavior / positive regulation of growth hormone receptor signaling pathway / actin polymerization or depolymerization / positive regulation of multicellular organism growth / positive regulation of synapse assembly / regulation of postsynapse organization / positive regulation of vascular endothelial cell proliferation / cartilage development / negative regulation of interleukin-1 beta production / positive regulation of sprouting angiogenesis / negative regulation of endothelial cell proliferation / dendrite development / negative regulation of interleukin-6 production / protein tyrosine kinase activator activity / positive regulation of insulin secretion involved in cellular response to glucose stimulus / decidualization / negative regulation of tumor necrosis factor production / Synthesis, secretion, and deacylation of Ghrelin / postsynaptic modulation of chemical synaptic transmission / negative regulation of insulin secretion / response to electrical stimulus / synapse assembly / positive regulation of adipose tissue development / response to hormone / hormone-mediated signaling pathway / negative regulation of angiogenesis / Peptide ligand-binding receptors / excitatory postsynaptic potential / G protein-coupled receptor binding / positive regulation of insulin secretion / Schaffer collateral - CA1 synapse / negative regulation of inflammatory response / 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 / response to estrogen / G-protein activation / Activation of G protein gated Potassium channels / Inhibition of voltage gated Ca2+ channels via Gbeta/gamma subunits / glucose metabolic process / Prostacyclin signalling through prostacyclin receptor / G beta:gamma signalling through CDC42 / Glucagon signaling in metabolic regulation / G beta:gamma signalling through BTK / Synthesis, secretion, and inactivation of Glucagon-like Peptide-1 (GLP-1) / ADP signalling through P2Y purinoceptor 12 / Sensory perception of sweet, bitter, and umami (glutamate) taste / 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 / ADP signalling through P2Y purinoceptor 1 / G beta:gamma signalling through PI3Kgamma / Cooperation of PDCL (PhLP1) and TRiC/CCT in G-protein beta folding / adenylate cyclase-activating dopamine receptor signaling pathway / GPER1 signaling / Inactivation, recovery and regulation of the phototransduction cascade / cellular response to prostaglandin E stimulus / G-protein beta-subunit binding / heterotrimeric G-protein complex / G alpha (12/13) signalling events / sensory perception of taste / extracellular vesicle / signaling receptor complex adaptor activity / Thrombin signalling through proteinase activated receptors (PARs) / regulation of cell population proliferation / positive regulation of cold-induced thermogenesis / GTPase binding / positive regulation of cytosolic calcium ion concentration / Ca2+ pathway / retina development in camera-type eye
Similarity search - Function
Preproghrelin peptide / Motilin/ghrelin-associated peptide / Motilin/ghrelin / Motilin/ghrelin-associated peptide / Motilin/ghrelin / YVTN repeat-like/Quinoprotein amine dehydrogenase / 7 Propeller / Methylamine Dehydrogenase; Chain H / G-protein, gamma subunit / G-protein gamma subunit domain profile. ...Preproghrelin peptide / Motilin/ghrelin-associated peptide / Motilin/ghrelin / Motilin/ghrelin-associated peptide / Motilin/ghrelin / YVTN repeat-like/Quinoprotein amine dehydrogenase / 7 Propeller / Methylamine Dehydrogenase; Chain H / G-protein, gamma subunit / G-protein gamma subunit domain profile. / G-protein gamma-like domain / G-protein gamma-like domain superfamily / GGL domain / G protein gamma subunit-like motifs / GGL domain / Guanine nucleotide-binding protein, beta subunit / G-protein, beta subunit / G-protein beta WD-40 repeat / WD40 repeat, conserved site / Trp-Asp (WD) repeats signature. / WD domain, G-beta repeat / Trp-Asp (WD) repeats profile. / Trp-Asp (WD) repeats circular profile. / WD40 repeats / WD40 repeat / WD40-repeat-containing domain superfamily / WD40/YVTN repeat-like-containing domain superfamily / Immunoglobulins / Immunoglobulin-like / Sandwich / Mainly Beta
Similarity search - Domain/homology
CHOLESTEROL / OCTANOIC ACID (CAPRYLIC ACID) / Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2 / Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1 / Appetite-regulating hormone
Similarity search - Component
Biological speciesHomo sapiens (human)
Lama glama (llama)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 2.9 Å
AuthorsWang, Y. / Zhuang, Y. / Xu, P. / Xu, H.E. / Jiang, Y.
Funding support China, 1items
OrganizationGrant numberCountry
National Natural Science Foundation of China (NSFC)31770796 China
CitationJournal: Nat Commun / Year: 2021
Title: Molecular recognition of an acyl-peptide hormone and activation of ghrelin receptor.
Authors: Yue Wang / Shimeng Guo / Youwen Zhuang / Ying Yun / Peiyu Xu / Xinheng He / Jia Guo / Wanchao Yin / H Eric Xu / Xin Xie / Yi Jiang /
Abstract: Ghrelin, also called "the hunger hormone", is a gastric peptide hormone that regulates food intake, body weight, as well as taste sensation, reward, cognition, learning and memory. One unique feature ...Ghrelin, also called "the hunger hormone", is a gastric peptide hormone that regulates food intake, body weight, as well as taste sensation, reward, cognition, learning and memory. One unique feature of ghrelin is its acylation, primarily with an octanoic acid, which is essential for its binding and activation of the ghrelin receptor, a G protein-coupled receptor. The multifaceted roles of ghrelin make ghrelin receptor a highly attractive drug target for growth retardation, obesity, and metabolic disorders. Here we present two cryo-electron microscopy structures of G-coupled ghrelin receptor bound to ghrelin and a synthetic agonist, GHRP-6. Analysis of these two structures reveals a unique binding pocket for the octanoyl group, which guides the correct positioning of the peptide to initiate the receptor activation. Together with mutational and functional data, our structures define the rules for recognition of the acylated peptide hormone and activation of ghrelin receptor, and provide structural templates to facilitate drug design targeting ghrelin receptor.
History
DepositionJul 5, 2021Deposition site: PDBJ / Processing site: PDBJ
Revision 1.0Aug 18, 2021Provider: repository / Type: Initial release
Revision 2.0Mar 16, 2022Group: Atomic model / Data collection ...Atomic model / Data collection / Database references / Derived calculations / Polymer sequence / Source and taxonomy / Structure summary
Category: atom_site / atom_site_anisotrop ...atom_site / atom_site_anisotrop / citation / citation_author / em_imaging / em_software / entity / entity_poly / entity_poly_seq / entity_src_gen / pdbx_contact_author / pdbx_nonpoly_scheme / pdbx_poly_seq_scheme / pdbx_struct_assembly_prop
Item: _atom_site_anisotrop.id / _atom_site_anisotrop.pdbx_auth_comp_id ..._atom_site_anisotrop.id / _atom_site_anisotrop.pdbx_auth_comp_id / _atom_site_anisotrop.pdbx_label_comp_id / _citation.country / _citation.journal_abbrev / _citation.journal_id_CSD / _citation.journal_id_ISSN / _citation.journal_volume / _citation.page_first / _citation.page_last / _citation.pdbx_database_id_DOI / _citation.pdbx_database_id_PubMed / _citation.title / _citation.year / _citation_author.identifier_ORCID / _em_imaging.nominal_defocus_max / _em_imaging.nominal_defocus_min / _em_software.category / _em_software.fitting_id / _em_software.imaging_id / _entity.formula_weight / _entity_poly.pdbx_seq_one_letter_code / _entity_poly.pdbx_seq_one_letter_code_can / _entity_poly_seq.mon_id / _entity_src_gen.gene_src_common_name / _pdbx_nonpoly_scheme.auth_mon_id / _pdbx_nonpoly_scheme.auth_seq_num / _pdbx_poly_seq_scheme.auth_mon_id / _pdbx_poly_seq_scheme.mon_id / _pdbx_poly_seq_scheme.pdb_mon_id
Description: Sequence discrepancy / Details: The A308 residue of the R chain is corrected to S. / Provider: author / Type: Coordinate replacement
Revision 2.1Oct 30, 2024Group: Data collection / Structure summary
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / em_admin / pdbx_entry_details / pdbx_modification_feature
Item: _em_admin.last_update / _pdbx_entry_details.has_protein_modification

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Structure visualization

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Assembly

Deposited unit
A: Engineered G-alpha-q subunit
B: Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1
C: Ghrelin-28
G: Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2
N: NB35
R: Soluble cytochrome b562
hetero molecules


Theoretical massNumber of molelcules
Total (without water)183,7409
Polymers182,8226
Non-polymers9183
Water00
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: electron microscopy
TypeNameSymmetry operationNumber
identity operation1_5551

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Components

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Protein , 2 types, 2 molecules AR

#1: Protein Engineered G-alpha-q subunit


Mass: 41855.578 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Production host: Spodoptera frugiperda (fall armyworm)
#6: Protein Soluble cytochrome b562


Mass: 74282.609 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: cybC / Production host: Spodoptera frugiperda (fall armyworm)

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Guanine nucleotide-binding protein ... , 2 types, 2 molecules BG

#2: Protein Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1 / Transducin beta chain 1


Mass: 40226.992 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: GNB1 / Production host: Spodoptera frugiperda (fall armyworm) / References: UniProt: P62873
#4: Protein Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2 / G gamma-I


Mass: 7861.143 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: GNG2 / Production host: Spodoptera frugiperda (fall armyworm) / References: UniProt: P59768

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Protein/peptide / Antibody , 2 types, 2 molecules CN

#3: Protein/peptide Ghrelin-28 / Ghrelin


Mass: 3252.726 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: GHRL, MTLRP, UNQ524/PRO1066 / Production host: Homo sapiens (human) / References: UniProt: Q9UBU3
#5: Antibody NB35


Mass: 15343.019 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Lama glama (llama) / Production host: Escherichia coli (E. coli)

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Non-polymers , 2 types, 3 molecules

#7: Chemical ChemComp-OCA / OCTANOIC ACID (CAPRYLIC ACID)


Mass: 144.211 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C8H16O2 / Feature type: SUBJECT OF INVESTIGATION
#8: Chemical ChemComp-CLR / CHOLESTEROL


Mass: 386.654 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: C27H46O

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Details

Has ligand of interestY
Has protein modificationY

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Experimental details

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Experiment

ExperimentMethod: ELECTRON MICROSCOPY
EM experimentAggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction

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Sample preparation

ComponentName: ghrelin-bound ghrelin receptor in complex with Gq / Type: COMPLEX / Entity ID: #1-#6 / Source: RECOMBINANT
Source (natural)Organism: Homo sapiens (human)
Source (recombinant)Organism: Spodoptera frugiperda (fall armyworm)
Buffer solutionpH: 7.4
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
VitrificationCryogen name: ETHANE

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Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: FEI TITAN KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: OTHER
Electron lensMode: OTHER / Nominal defocus max: 3000 nm / Nominal defocus min: 500 nm
Image recordingElectron dose: 80 e/Å2 / Film or detector model: GATAN K3 (6k x 4k)

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Processing

CTF correctionType: NONE
3D reconstructionResolution: 2.9 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 522055 / Symmetry type: POINT

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