3NPZ

Prolactin Receptor (PRLR) Complexed with the Natural Hormone (PRL)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.35 Å
  • R-Value Free: 0.292 
  • R-Value Work: 0.234 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Structural characterization of the stem-stem dimerization interface between prolactin receptor chains complexed with the natural hormone.

van Agthoven, J.Zhang, C.Tallet, E.Raynal, B.Hoos, S.Baron, B.England, P.Goffin, V.Broutin, I.

(2010) J.Mol.Biol. 404: 112-126

  • DOI: 10.1016/j.jmb.2010.09.036

  • PubMed Abstract: 
  • The most promising approach to targeting the tumor-growth-promoting actions of prolactin (PRL) mediated by its autocrine/paracrine pathway has been the development of specific PRL receptor (PRLR) antagonists. However, the optimization of such antagon ...

    The most promising approach to targeting the tumor-growth-promoting actions of prolactin (PRL) mediated by its autocrine/paracrine pathway has been the development of specific PRL receptor (PRLR) antagonists. However, the optimization of such antagonists requires a thorough understanding of the activation mechanism of PRLR. We have thus conducted a systematic X-ray crystallographic study in order to visualize the successive steps of PRLR activation by PRL. We report here the structure at 3.35 Å resolution of the 1:2 complex between natural PRL and two PRLR chains (PRLR1 and PRLR2), corresponding to the final activated state of PRLR. Further than our previously published structure involving an affinity-matured PRL variant, this structure allowed to visualize for the first time the loop L5 spanning PRLR2 residues Thr133-Phe140, revealing its central implication for the three intermolecular interfaces of the complex. We equally succeeded in obtaining a comprehensive picture of the PRLR-PRLR dimerization interface, also called stem-stem interface. Site-directed mutagenesis was conducted to probe the energetic importance of stem-stem contacts highlighted by the structure. Surprisingly, in spite of significant structural differences between the PRL/PRLR(2) complex and the 1:2 growth hormone/growth hormone receptor complex, our mutational data suggest that hot-spot residues that stabilize the receptor dimerization interface are equivalent in the two complexes. This study provides a new overall picture of the structural features of PRLR involved in stabilizing its complex with PRL.


    Organizational Affiliation

    CNRS UMR 8015, Laboratoire de cristallographie et RMN biologiques, F-75006 Paris, France.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Prolactin
A
199Homo sapiensMutation(s): 0 
Gene Names: PRL
Find proteins for P01236 (Homo sapiens)
Go to Gene View: PRL
Go to UniProtKB:  P01236
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Prolactin receptor
B, C
220Rattus norvegicusMutation(s): 0 
Gene Names: Prlr
Find proteins for P05710 (Rattus norvegicus)
Go to UniProtKB:  P05710
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.35 Å
  • R-Value Free: 0.292 
  • R-Value Work: 0.234 
  • Space Group: P 43 21 2
Unit Cell:
Length (Å)Angle (°)
a = 92.174α = 90.00
b = 92.174β = 90.00
c = 216.072γ = 90.00
Software Package:
Software NamePurpose
MxCuBEdata collection
PHENIXrefinement
MOSFLMdata reduction
PHASERphasing
SCALAdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2010-10-06
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance