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

  • 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 protei ...

    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: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
PROTEIN (GROWTH FACTOR IGF-1)
A
57Homo sapiensMutation(s): 0 
Gene Names: IGF1 (IBP1)
Find proteins for P05019 (Homo sapiens)
Go to Gene View: IGF1
Go to UniProtKB:  P05019
Experimental Data & Validation

Experimental Data

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

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

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