1HWH

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

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.90 Å
  • R-Value Free: 0.317 
  • R-Value Work: 0.215 
  • R-Value Observed: 0.215 

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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

  • DOI: 10.1074/jbc.271.50.32197
  • Primary Citation of Related Structures:  
    1HWG, 1HWH

  • 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 binding sites ...

    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
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(by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
GROWTH HORMONEA191Homo sapiensMutation(s): 1 
Gene Names: GH1
UniProt & NIH Common Fund Data Resources
Find proteins for P01241 (Homo sapiens)
Explore P01241 
Go to UniProtKB:  P01241
PHAROS:  P01241
GTEx:  ENSG00000259384
Protein Feature View
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  • Reference Sequence
Find similar proteins by: 
(by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
GROWTH HORMONE BINDING PROTEINB237Homo sapiensMutation(s): 0 
Gene Names: GHR
UniProt & NIH Common Fund Data Resources
Find proteins for P10912 (Homo sapiens)
Explore P10912 
Go to UniProtKB:  P10912
PHAROS:  P10912
GTEx:  ENSG00000112964
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.90 Å
  • R-Value Free: 0.317 
  • R-Value Work: 0.215 
  • R-Value Observed: 0.215 
  • Space Group: P 43 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 67.78α = 90
b = 67.78β = 90
c = 229.24γ = 90
Software Package:
Software NamePurpose
MOSFLMdata reduction
CCP4data reduction
X-PLORmodel building
X-PLORrefinement
CCP4data scaling
X-PLORphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

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