1B9G

INSULIN-LIKE-GROWTH-FACTOR-1


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 15 
  • Conformers Submitted: 
  • Selection Criteria: LEAST RESTRAINT VIOLATIONS 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Solution structure of a mini IGF-1.

De Wolf, E.Gill, R.Geddes, S.Pitts, J.Wollmer, A.Grotzinger, J.

(1996) Protein Sci 5: 2193-2202

  • DOI: 10.1002/pro.5560051106
  • Primary Citation of Related Structures:  
    1B9G

  • PubMed Abstract: 
  • Mini insulin-like growth factor 1, an inactive insulin-like growth factor 1 mutant lacking the C region, was studied by 2D NMR spectroscopy. Resonances were assigned for almost all protons of the 57 amino acid residues. The 3D structure of the protein was determined by distance geometry methods ...

    Mini insulin-like growth factor 1, an inactive insulin-like growth factor 1 mutant lacking the C region, was studied by 2D NMR spectroscopy. Resonances were assigned for almost all protons of the 57 amino acid residues. The 3D structure of the protein was determined by distance geometry methods. Three helical segments; Ala 8-Cys 18, Gly 42-Phe 49, and Leu 54-Cys 61, were identified, corresponding to those present in wild-type insulin-like growth factor 1 and in single-chain insulin. Their relative orientation, however, was found to be changed. This change is connected with a displacement of the Phe 23-Tyr 24-Phe 25-Asn 26 beta-strand-like segment, i.e., of aromatic side chains known to be important for receptor binding. Thus, deletion of the C region of IGF-1 results in a substantial tertiary structural rearrangement that accounts for the loss of receptor affinity.


    Organizational Affiliation

    Institut für Biochemie, Rheinisch-Westfälische Technische Hochsclule Aachen, Germany.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
PROTEIN (GROWTH FACTOR IGF-1)A57Homo 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
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 15 
  • Conformers Submitted: 
  • Selection Criteria: LEAST RESTRAINT VIOLATIONS 
  • OLDERADO: 1B9G Olderado

Structure Validation

View Full Validation Report




Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 1999-02-23
    Type: Initial release
  • Version 1.1: 2008-04-26
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance