8AVO

Human leptin in complex with the human LEP-R ectodomain fused to a C-terminal trimeric isoleucine GCN4 zipper (open 3:3 model).


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 6.84 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Mechanism of receptor assembly via the pleiotropic adipokine Leptin.

Tsirigotaki, A.Dansercoer, A.Verschueren, K.H.G.Markovic, I.Pollmann, C.Hafer, M.Felix, J.Birck, C.Van Putte, W.Catteeuw, D.Tavernier, J.Fernando Bazan, J.Piehler, J.Savvides, S.N.Verstraete, K.

(2023) Nat Struct Mol Biol 30: 551-563

  • DOI: https://doi.org/10.1038/s41594-023-00941-9
  • Primary Citation of Related Structures:  
    7Z3P, 7Z3Q, 8AVB, 8AVC, 8AVD, 8AVE, 8AVF, 8AVO, 8B7Q

  • PubMed Abstract: 

    The adipokine Leptin activates its receptor LEP-R in the hypothalamus to regulate body weight and exerts additional pleiotropic functions in immunity, fertility and cancer. However, the structure and mechanism of Leptin-mediated LEP-R assemblies has remained unclear. Intriguingly, the signaling-competent isoform of LEP-R is only lowly abundant amid several inactive short LEP-R isoforms contributing to a mechanistic conundrum. Here we show by X-ray crystallography and cryo-EM that, in contrast to long-standing paradigms, Leptin induces type I cytokine receptor assemblies featuring 3:3 stoichiometry and demonstrate such Leptin-induced trimerization of LEP-R on living cells via single-molecule microscopy. In mediating these assemblies, Leptin undergoes drastic restructuring that activates its site III for binding to the Ig domain of an adjacent LEP-R. These interactions are abolished by mutations linked to obesity. Collectively, our study provides the structural and mechanistic framework for how evolutionarily conserved Leptin:LEP-R assemblies with 3:3 stoichiometry can engage distinct LEP-R isoforms to achieve signaling.


  • Organizational Affiliation

    Unit for Structural Biology, Department of Biochemistry and Microbiology, Ghent University, Ghent, Belgium.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Leptin
A, C, E
171Homo sapiensMutation(s): 0 
Gene Names: LEPOBOBS
UniProt & NIH Common Fund Data Resources
Find proteins for P41159 (Homo sapiens)
Explore P41159 
Go to UniProtKB:  P41159
PHAROS:  P41159
GTEx:  ENSG00000174697 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP41159
Sequence Annotations
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
Leptin receptor
B, D, F
868Homo sapiensMutation(s): 0 
Gene Names: LEPRDBOBR
UniProt & NIH Common Fund Data Resources
Find proteins for P48357 (Homo sapiens)
Explore P48357 
Go to UniProtKB:  P48357
PHAROS:  P48357
GTEx:  ENSG00000116678 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP48357
Sequence Annotations
Expand
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 6.84 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 
EM Software:
TaskSoftware PackageVersion
MODEL REFINEMENTPHENIX1.19.2
RECONSTRUCTIONcryoSPARCv3.3.2

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Research Foundation - Flanders (FWO)BelgiumG0G0619N

Revision History  (Full details and data files)

  • Version 1.0: 2023-04-05
    Type: Initial release
  • Version 1.1: 2023-04-26
    Changes: Database references