1AX8

Human obesity protein, leptin

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.4 Å
  • R-Value Free: 0.283 
  • R-Value Work: 0.185 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history. 

Literature

Crystal structure of the obese protein leptin-E100.

Zhang, F., Basinski, M.B., Beals, J.M., Briggs, S.L., Churgay, L.M., Clawson, D.K., DiMarchi, R.D., Furman, T.C., Hale, J.E., Hsiung, H.M., Schoner, B.E., Smith, D.P., Zhang, X.Y., Wery, J.P., Schevitz, R.W.

(1997) Nature 387: 206-209

  • DOI: 10.1038/387206a0

  • PubMed Abstract: 

    • Mutations in the obese gene (OB) or in the gene encoding the OB receptor(OB-R) result in obesity, infertility and diabetes in a variety of mouse phenotypes. The demonstration that OB protein (also known as leptin) can normalize body weight in ob/ob m ...

    Mutations in the obese gene (OB) or in the gene encoding the OB receptor(OB-R) result in obesity, infertility and diabetes in a variety of mouse phenotypes. The demonstration that OB protein (also known as leptin) can normalize body weight in ob/ob mice has generated enormous interest. Most human obesity does not appear to result from a mutant form of leptin: rather, serum leptin concentrations are increased and there is an apparent inability to transport it to the central nervous system (CNS). Injection of leptin into the CNS of overfed rodents resistant to peripheral administration was found to induce biological activity. Consequently, for the leptin to act as a weight-lowering hormone in human obesity, it appears that appropriate concentrations must be present in the CNS. This places a premium on understanding the structure of the hormone in order to design more potent and selective agonists. Here we report the crystal structure at 2.4A resolution of a human mutant OB protein (leptin-E100) that has comparable biological activity to wild type but which crystallizes more readily. The structure reveals a four-helix bundle similar to that of the long-chain helical cytokine family.

    Related Citations: 
    • Positional Cloning of the Mouse Obese Gene and its Human Homologue
      Zhang, Y.,Proenca, R.,Maffei, M.,Barone, M.,Leopold, L.,Friedman, J.M.
      (1994) Nature 372: 425
    • Erratum. Positional Cloning of the Mouse Obese Gene and its Human Homologue
      Zhang, Y.,Proenca, R.,Maffei, M.,Barone, M.,Leopold, L.,Friedman, J.M.
      (1995) Nature 374: 479

    Organizational Affiliation: 

    Research Technologies and Proteins, Endocrine Research Divisions, Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, Indiana 46285, USA.zhang_faming@lilly.com




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
OBESITY PROTEIN
A
146Homo sapiensMutation(s): 1 
Gene Names: LEP (OB, OBS)
Find proteins for P41159 (Homo sapiens)
Go to Gene View: LEP
Go to UniProtKB:  P41159
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.4 Å
  • R-Value Free: 0.283 
  • R-Value Work: 0.185 
  • Space Group: P 63
Unit Cell:
Length (Å)Angle (°)
a = 88.140α = 90.00
b = 88.140β = 90.00
c = 48.050γ = 120.00
Software Package:
Software NamePurpose
MLPHAREphasing
SCALEPACKdata scaling
DENZOdata reduction
X-PLORrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots


View more in-depth experimental data

Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1998-11-25
    Type: Initial release
  • Version 1.1: 2008-03-24
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Derived calculations, Version format compliance
  • Version 1.3: 2012-05-09
    Type: Derived calculations