1H59

Complex of IGFBP-5 with IGF-I


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.10 Å
  • R-Value Free: 0.262 
  • R-Value Work: 0.218 
  • R-Value Observed: 0.218 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

The Interaction of Insulin-Like Growth Factor-I with the N-Terminal Domain of Igfbp-5

Zesaawski, W.Beisel, H.G.Kamionka, M.Kalus, W.Engh, R.A.Huber, R.Lang, K.Holak, T.A.

(2001) EMBO J 20: 3638

  • DOI: 10.1093/emboj/20.14.3638
  • Primary Citation of Related Structures:  
    1H59

  • PubMed Abstract: 
  • Insulin-like growth factors (IGFs) are key regulators of cell proliferation, differentiation and transformation, and are thus pivotal in cancer, especially breast, prostate and colon neoplasms. They are also important in many neurological and bone disorders ...

    Insulin-like growth factors (IGFs) are key regulators of cell proliferation, differentiation and transformation, and are thus pivotal in cancer, especially breast, prostate and colon neoplasms. They are also important in many neurological and bone disorders. Their potent mitogenic and anti-apoptotic actions depend primarily on their availability to bind to the cell surface IGF-I receptor. In circulation and interstitial fluids, IGFs are largely unavailable as they are tightly associated with IGF-binding proteins (IGFBPs) and are released after IGFBP proteolysis. Here we report the 2.1 A crystal structure of the complex of IGF-I bound to the N-terminal IGF-binding domain of IGFBP-5 (mini-IGFBP-5), a prototype interaction for all N-terminal domains of the IGFBP family. The principal interactions in the complex comprise interlaced hydrophobic side chains that protrude from both IGF-I and the IGFBP-5 fragment and a surrounding network of polar interactions. A solvent-exposed hydrophobic patch is located on the IGF-I pole opposite to the mini-IGFBP-5 binding region and marks the IGF-I receptor binding site.


    Organizational Affiliation

    Max Planck Institute for Biochemistry, D-82152 Martinsried, Germany.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
INSULIN-LIKE GROWTH FACTOR IAA70Homo sapiensMutation(s): 0 
Gene Names: IGF1IBP1
UniProt & NIH Common Fund Data Resources
Find proteins for P05019 (Homo sapiens)
Explore P05019 
Go to UniProtKB:  P05019
PHAROS:  P05019
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
INSULIN-LIKE GROWTH FACTOR BINDING PROTEIN 5B54Homo sapiensMutation(s): 0 
Gene Names: IGFBP5IBP5
UniProt & NIH Common Fund Data Resources
Find proteins for P24593 (Homo sapiens)
Explore P24593 
Go to UniProtKB:  P24593
PHAROS:  P24593
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.10 Å
  • R-Value Free: 0.262 
  • R-Value Work: 0.218 
  • R-Value Observed: 0.218 
  • Space Group: P 21 3
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 74.385α = 90
b = 74.385β = 90
c = 74.385γ = 90
Software Package:
Software NamePurpose
CNSrefinement
MOSFLMdata reduction
SCALAdata scaling

Structure Validation

View Full Validation Report




Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2002-05-16
    Type: Initial release
  • Version 1.1: 2011-05-08
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance