2AEW

A model for growth hormone receptor activation based on subunit rotation within a receptor dimer


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.7 Å
  • R-Value Free: 0.302 
  • R-Value Work: 0.257 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Model for growth hormone receptor activation based on subunit rotation within a receptor dimer.

Brown, R.J.Adams, J.J.Pelekanos, R.A.Wan, Y.McKinstry, W.J.Palethorpe, K.Seeber, R.M.Monks, T.A.Eidne, K.A.Parker, M.W.Waters, M.J.

(2005) Nat.Struct.Mol.Biol. 12: 814-821

  • DOI: 10.1038/nsmb977

  • PubMed Abstract: 
  • Growth hormone is believed to activate the growth hormone receptor (GHR) by dimerizing two identical receptor subunits, leading to activation of JAK2 kinase associated with the cytoplasmic domain. However, we have reported previously that dimerizatio ...

    Growth hormone is believed to activate the growth hormone receptor (GHR) by dimerizing two identical receptor subunits, leading to activation of JAK2 kinase associated with the cytoplasmic domain. However, we have reported previously that dimerization alone is insufficient to activate full-length GHR. By comparing the crystal structure of the liganded and unliganded human GHR extracellular domain, we show here that there is no substantial change in its conformation on ligand binding. However, the receptor can be activated by rotation without ligand by inserting a defined number of alanine residues within the transmembrane domain. Fluorescence resonance energy transfer (FRET), bioluminescence resonance energy transfer (BRET) and coimmunoprecipitation studies suggest that receptor subunits undergo specific transmembrane interactions independent of hormone binding. We propose an activation mechanism involving a relative rotation of subunits within a dimeric receptor as a result of asymmetric placement of the receptor-binding sites on the ligand.


    Organizational Affiliation

    Institute for Molecular Bioscience and School of Biomedical Sciences, University of Queensland, St. Lucia, Queensland, Australia.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Growth hormone receptor
A, B
205Homo sapiensMutation(s): 0 
Gene Names: GHR
Find proteins for P10912 (Homo sapiens)
Go to Gene View: GHR
Go to UniProtKB:  P10912
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.7 Å
  • R-Value Free: 0.302 
  • R-Value Work: 0.257 
  • Space Group: C 2 2 21
Unit Cell:
Length (Å)Angle (°)
a = 99.720α = 90.00
b = 112.167β = 90.00
c = 93.160γ = 90.00
Software Package:
Software NamePurpose
AMoREphasing
PDB_EXTRACTdata extraction
CNSrefinement
SCALEPACKdata scaling
DENZOdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2005-11-01
    Type: Initial release
  • Version 1.1: 2007-10-16
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2017-10-11
    Type: Refinement description