1EBP

COMPLEX BETWEEN THE EXTRACELLULAR DOMAIN OF ERYTHROPOIETIN (EPO) RECEPTOR [EBP] AND AN AGONIST PEPTIDE [EMP1]


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.8 Å
  • R-Value Free: 0.334 
  • R-Value Work: 0.210 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Functional mimicry of a protein hormone by a peptide agonist: the EPO receptor complex at 2.8 A.

Livnah, O.Stura, E.A.Johnson, D.L.Middleton, S.A.Mulcahy, L.S.Wrighton, N.C.Dower, W.J.Jolliffe, L.K.Wilson, I.A.

(1996) Science 273: 464-471


  • PubMed Abstract: 
  • The functional mimicry of a protein by an unrelated small molecule has been a formidable challenge. Now, however, the biological activity of a 166-residue hematopoietic growth hormone, erythropoietin (EPO), with its class 1 cytokine receptor has been ...

    The functional mimicry of a protein by an unrelated small molecule has been a formidable challenge. Now, however, the biological activity of a 166-residue hematopoietic growth hormone, erythropoietin (EPO), with its class 1 cytokine receptor has been mimicked by a 20-residue cyclic peptide unrelated in sequence to the natural ligand. The crystal structure at 2.8 A resolution of a complex of this agonist peptide with the extracellular domain of EPO receptor reveals that a peptide dimer induces an almost perfect twofold dimerization of the receptor. The dimer assembly differs from that of the human growth hormone (hGH) receptor complex and suggests that more than one mode of dimerization may be able to induce signal transduction and cell proliferation. The EPO receptor binding site, defined by peptide interaction, corresponds to the smaller functional epitope identified for hGH receptor. Similarly, the EPO mimetic peptide ligand can be considered as a minimal hormone, and suggests the design of nonpeptidic small molecule mimetics for EPO and other cytokines may indeed be achievable.


    Related Citations: 
    • Small Peptides as Potent Mimetics of the Protein Hormone Erythropoietin
      Wrighton, N.C.,Farrell, F.X.,Chang, R.,Kashyap, A.K.,Barbone, F.P.,Mulcahy, L.S.,Johnson, D.L.,Barrett, R.W.,Jolliffe, L.K.,Dower, W.J.
      (1996) Science 273: 458


    Organizational Affiliation

    Department of Molecular Biology and the Skaggs Institute of Chemical Biology, The Scripps Research Institute, 10666 North Torrey Pines Road, La Jolla, CA 92037, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
EPO RECEPTOR
A, B
211Homo sapiensGene Names: EPOR
Find proteins for P19235 (Homo sapiens)
Go to Gene View: EPOR
Go to UniProtKB:  P19235
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
EPO MIMETICS PEPTIDE 1
C, D
20N/AN/A
Protein Feature View is not available: No corresponding UniProt sequence found.
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.8 Å
  • R-Value Free: 0.334 
  • R-Value Work: 0.210 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 59.240α = 90.00
b = 75.500β = 90.00
c = 132.180γ = 90.00
Software Package:
Software NamePurpose
X-PLORphasing
X-PLORmodel building
X-PLORrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1997-07-29
    Type: Initial release
  • Version 1.1: 2008-03-24
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance