3V6O

Leptin Receptor-antibody complex


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.95 Å
  • R-Value Free: 0.213 
  • R-Value Work: 0.171 
  • R-Value Observed: 0.173 

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Ligand Structure Quality Assessment 


This is version 1.4 of the entry. See complete history


Literature

Structure of the human obesity receptor leptin-binding domain reveals the mechanism of leptin antagonism by a monoclonal antibody.

Carpenter, B.Hemsworth, G.R.Wu, Z.Maamra, M.Strasburger, C.J.Ross, R.J.Artymiuk, P.J.

(2012) Structure 20: 487-497

  • DOI: https://doi.org/10.1016/j.str.2012.01.019
  • Primary Citation of Related Structures:  
    3V6O, 3VG0

  • PubMed Abstract: 

    Leptin regulates energy homeostasis, fertility, and the immune system, making it an important drug target. However, due to a complete lack of structural data for the obesity receptor (ObR), leptin's mechanism of receptor activation remains poorly understood. We have crystallized the Fab fragment of a leptin-blocking monoclonal antibody (9F8), both in its uncomplexed state and bound to the leptin-binding domain (LBD) of human ObR. We describe the structure of the LBD-9F8 Fab complex and the conformational changes in 9F8 associated with LBD binding. A molecular model of the putative leptin-LBD complex reveals that 9F8 Fab blocks leptin binding through only a small (10%) overlap in their binding sites, and that leptin binding is likely to involve an induced fit mechanism. This crystal structure of the leptin-binding domain of the obesity receptor will facilitate the design of therapeutics to modulate leptin signaling.


  • Organizational Affiliation

    Academic Unit of Diabetes, Endocrinology and Reproduction, Department of Human Metabolism, University of Sheffield, Sheffield S10 2JF, UK.


Macromolecules
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Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Leptin receptor
A, B
206Homo sapiensMutation(s): 0 
Gene Names: DBLEPROBR
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
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  • Reference Sequence
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Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
Monoclonal antibody 9F8 fab fragment Heavy chain
C, D
221Mus musculusMutation(s): 0 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
Sequence Annotations
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 3
MoleculeChains Sequence LengthOrganismDetailsImage
Monoclonal antibody 9F8 fab fragment Light chain
E, F
215Mus musculusMutation(s): 0 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
Glycosylation
Glycosylation Sites: 1
Sequence Annotations
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  • Reference Sequence
Small Molecules
Ligands 5 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
NAG
Query on NAG

Download Ideal Coordinates CCD File 
MA [auth F]2-acetamido-2-deoxy-beta-D-glucopyranose
C8 H15 N O6
OVRNDRQMDRJTHS-FMDGEEDCSA-N
CYS
Query on CYS

Download Ideal Coordinates CCD File 
G [auth A],
P [auth B]
CYSTEINE
C3 H7 N O2 S
XUJNEKJLAYXESH-REOHCLBHSA-N
EDO
Query on EDO

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BA [auth D]
CA [auth D]
DA [auth D]
EA [auth D]
FA [auth D]
BA [auth D],
CA [auth D],
DA [auth D],
EA [auth D],
FA [auth D],
GA [auth D],
H [auth A],
HA [auth D],
I [auth A],
J [auth A],
JA [auth E],
K [auth A],
KA [auth E],
L [auth A],
LA [auth E],
M [auth A],
N [auth A],
O [auth A],
PA [auth F],
Q [auth B],
QA [auth F],
R [auth B],
RA [auth F],
S [auth B],
SA [auth F],
T [auth B],
TA [auth F],
U [auth B],
UA [auth F],
X [auth C],
Y [auth C]
1,2-ETHANEDIOL
C2 H6 O2
LYCAIKOWRPUZTN-UHFFFAOYSA-N
ACT
Query on ACT

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AA [auth D]
IA [auth E]
NA [auth F]
OA [auth F]
V [auth C]
AA [auth D],
IA [auth E],
NA [auth F],
OA [auth F],
V [auth C],
W [auth C]
ACETATE ION
C2 H3 O2
QTBSBXVTEAMEQO-UHFFFAOYSA-M
NA
Query on NA

Download Ideal Coordinates CCD File 
Z [auth C]SODIUM ION
Na
FKNQFGJONOIPTF-UHFFFAOYSA-N
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.95 Å
  • R-Value Free: 0.213 
  • R-Value Work: 0.171 
  • R-Value Observed: 0.173 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 89.814α = 90
b = 118.829β = 90
c = 171.281γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
PDB_EXTRACTdata extraction
ADSCdata collection
MOSFLMdata reduction
SCALAdata scaling
PHASERphasing

Structure Validation

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Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2012-03-14
    Type: Initial release
  • Version 1.1: 2012-04-25
    Changes: Database references
  • Version 1.2: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Data collection, Database references, Derived calculations, Structure summary
  • Version 1.3: 2023-12-27
    Changes: Data collection, Database references, Derived calculations, Structure summary
  • Version 1.4: 2024-10-16
    Changes: Structure summary