1HWH

1:1 COMPLEX OF HUMAN GROWTH HORMONE MUTANT G120R WITH ITS SOLUBLE BINDING PROTEIN


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.9 Å
  • R-Value Free: 0.317 
  • R-Value Work: 0.215 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Crystal structure of an antagonist mutant of human growth hormone, G120R, in complex with its receptor at 2.9 A resolution.

Sundstrom, M.Lundqvist, T.Rodin, J.Giebel, L.B.Milligan, D.Norstedt, G.

(1996) J.Biol.Chem. 271: 32197-32203

  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Human growth hormone binds two receptor molecules and thereby induces signal transduction through receptor dimerization. At high concentrations, growth hormone acts as an antagonist because of a large difference in affinities at the respective bindin ...

    Human growth hormone binds two receptor molecules and thereby induces signal transduction through receptor dimerization. At high concentrations, growth hormone acts as an antagonist because of a large difference in affinities at the respective binding sites. This antagonist action can be enhanced further by reducing binding in the low affinity binding site. A growth hormone antagonist mutant Gly-120 --> Arg, has been crystallized with its receptor as a 1:1 complex and the crystal structure determined at 2.9 A resolution. The 1:1 complex is remarkably similar to the native growth hormone-receptor 1:2 complex. A comparison between the two structures reveals only minimal differences in the conformations of the hormone or its receptor in the two complexes, including the angle between the two immunoglobulin-like domains of the receptor. Further, two symmetry-related 1:1 complexes in the crystal form a 2:2 complex with a large solvent inaccessible area between two receptor molecules. In addition, we present here a native human growth hormone-human growth hormone-binding protein 1:2 complex structure at 2.5 A resolution. One important difference between our structure and the previously published crystal structure at 2.8 A is revealed. Trp-104 in the receptor, a key residue in the hormone-receptor interaction, has an altered conformation in the low affinity site enabling a favorable hydrogen bond to be formed with Asp-116 of the hormone.


    Organizational Affiliation

    Department of Structural Biochemistry, Pharmacia and Upjohn, Preclinical Research and Development, S-112 87 Stockholm, Sweden. michael.sundstrom@sto.pharmacia.se




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
GROWTH HORMONE
A
191Homo sapiensMutation(s): 1 
Gene Names: GH1
Find proteins for P01241 (Homo sapiens)
Go to Gene View: GH1
Go to UniProtKB:  P01241
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
GROWTH HORMONE BINDING PROTEIN
B
237Homo 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: 2.9 Å
  • R-Value Free: 0.317 
  • R-Value Work: 0.215 
  • Space Group: P 43 21 2
Unit Cell:
Length (Å)Angle (°)
a = 67.780α = 90.00
b = 67.780β = 90.00
c = 229.240γ = 90.00
Software Package:
Software NamePurpose
X-PLORphasing
MOSFLMdata reduction
CCP4data reduction
X-PLORrefinement
CCP4data scaling
X-PLORmodel building

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1997-11-19
    Type: Initial release
  • Version 1.1: 2008-03-24
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance