7F9Y

ghrelin-bound ghrelin receptor in complex with Gq


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 2.90 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 2.0 of the entry. See complete history


Literature

Molecular recognition of an acyl-peptide hormone and activation of ghrelin receptor.

Wang, Y.Guo, S.Zhuang, Y.Yun, Y.Xu, P.He, X.Guo, J.Yin, W.Xu, H.E.Xie, X.Jiang, Y.

(2021) Nat Commun 12: 5064-5064

  • DOI: 10.1038/s41467-021-25364-2
  • Primary Citation of Related Structures:  
    7F9Y, 7F9Z

  • PubMed 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 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 ...

    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 q -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.


    Organizational Affiliation

    University of Chinese Academy of Sciences, Beijing, China. yijiang@simm.ac.cn.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Engineered G-alpha-q subunitA362Homo sapiensMutation(s): 0 
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1B371Homo sapiensMutation(s): 0 
Gene Names: GNB1
UniProt & NIH Common Fund Data Resources
Find proteins for P62873 (Homo sapiens)
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PHAROS:  P62873
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
Ghrelin-28C28Homo sapiensMutation(s): 0 
Gene Names: GHRLMTLRPUNQ524/PRO1066
Membrane Entity: Yes 
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Entity ID: 4
MoleculeChainsSequence LengthOrganismDetailsImage
Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2D [auth G]71Homo sapiensMutation(s): 0 
Gene Names: GNG2
Membrane Entity: Yes 
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Entity ID: 5
MoleculeChainsSequence LengthOrganismDetailsImage
NB35E [auth N]140Lama glamaMutation(s): 0 
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Entity ID: 6
MoleculeChainsSequence LengthOrganismDetailsImage
Soluble cytochrome b562F [auth R]661Homo sapiensMutation(s): 0 
Gene Names: cybCGHSR
Membrane Entity: Yes 
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Find proteins for Q92847 (Homo sapiens)
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Find proteins for P0ABE7 (Escherichia coli)
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UniProt GroupsQ92847P0ABE7
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Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CLR
Query on CLR

Download Ideal Coordinates CCD File 
H [auth R],
I [auth R]
CHOLESTEROL
C27 H46 O
HVYWMOMLDIMFJA-DPAQBDIFSA-N
 Ligand Interaction
OCA (Subject of Investigation/LOI)
Query on OCA

Download Ideal Coordinates CCD File 
G [auth C]OCTANOIC ACID (CAPRYLIC ACID)
C8 H16 O2
WWZKQHOCKIZLMA-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 2.90 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

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Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Natural Science Foundation of China (NSFC)China31770796

Revision History  (Full details and data files)

  • Version 1.0: 2021-08-18
    Type: Initial release
  • Version 2.0: 2022-03-16
    Type: Coordinate replacement
    Reason: Sequence discrepancy
    Changes: Atomic model, Data collection, Database references, Derived calculations, Polymer sequence, Source and taxonomy, Structure summary