6H3E

Receptor-bound Ghrelin conformation


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 1000 
  • Conformers Submitted: 10 
  • Selection Criteria: structures with the least restraint violations 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Structure and dynamics of G protein-coupled receptor-bound ghrelin reveal the critical role of the octanoyl chain.

Ferre, G.Louet, M.Saurel, O.Delort, B.Czaplicki, G.M'Kadmi, C.Damian, M.Renault, P.Cantel, S.Gavara, L.Demange, P.Marie, J.Fehrentz, J.A.Floquet, N.Milon, A.Baneres, J.L.

(2019) Proc.Natl.Acad.Sci.USA 116: 17525-17530

  • DOI: 10.1073/pnas.1905105116

  • PubMed Abstract: 
  • Ghrelin plays a central role in controlling major biological processes. As for other G protein-coupled receptor (GPCR) peptide agonists, the structure and dynamics of ghrelin bound to its receptor remain obscure. Using a combination of solution-state ...

    Ghrelin plays a central role in controlling major biological processes. As for other G protein-coupled receptor (GPCR) peptide agonists, the structure and dynamics of ghrelin bound to its receptor remain obscure. Using a combination of solution-state NMR and molecular modeling, we demonstrate that binding to the growth hormone secretagogue receptor is accompanied by a conformational change in ghrelin that structures its central region, involving the formation of a well-defined hydrophobic core. By comparing its acylated and nonacylated forms, we conclude that the ghrelin octanoyl chain is essential to form the hydrophobic core and promote access of ghrelin to the receptor ligand-binding pocket. The combination of coarse-grained molecular dynamics studies and NMR should prove useful in improving our mechanistic understanding of the complex conformational space explored by a natural peptide agonist when binding to its GPCR. Such information should also facilitate the design of new ghrelin receptor-selective drugs.


    Organizational Affiliation

    Institut des Biomolécules Max Mousseron, CNRS, Université de Montpellier, ENSCM, 34000 Montpellier, France alain.milon@ipbs.fr jean-louis.baneres@umontpellier.fr.,Institut de Pharmacologie et Biologie Structurale, Université de Toulouse, CNRS, Université Paul Sabatier, 31000 Toulouse, France.,Institut des Biomolécules Max Mousseron, CNRS, Université de Montpellier, ENSCM, 34000 Montpellier, France.,Institut de Pharmacologie et Biologie Structurale, Université de Toulouse, CNRS, Université Paul Sabatier, 31000 Toulouse, France; alain.milon@ipbs.fr jean-louis.baneres@umontpellier.fr.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Appetite-regulating hormone
A
19Homo sapiensMutation(s): 1 
Gene Names: GHRL (MTLRP)
Find proteins for Q9UBU3 (Homo sapiens)
Go to Gene View: GHRL
Go to UniProtKB:  Q9UBU3
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
FKZ
Query on FKZ

Download SDF File 
Download CCD File 
A
octan-1-amine
C8 H19 N
IOQPZZOEVPZRBK-UHFFFAOYSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
NH2
Query on NH2
A
NON-POLYMERH2 N

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Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 1000 
  • Conformers Submitted: 10 
  • Selection Criteria: structures with the least restraint violations 

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
French National Research AgencyFranceANR-17-CE11-0011-03

Revision History 

  • Version 1.0: 2019-07-24
    Type: Initial release
  • Version 1.1: 2019-08-21
    Type: Data collection, Database references
  • Version 1.2: 2019-08-28
    Type: Data collection, Database references
  • Version 1.3: 2019-09-04
    Type: Data collection, Database references