1BQT

THREE-DIMENSIONAL STRUCTURE OF HUMAN INSULIN-LIKE GROWTH FACTOR-I (IGF-I) DETERMINED BY 1H-NMR AND DISTANCE GEOMETRY, 6 STRUCTURES


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 
  • Selection Criteria: target function 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Three-dimensional structure of human insulin-like growth factor-I (IGF-I) determined by 1H-NMR and distance geometry.

Sato, A.Nishimura, S.Ohkubo, T.Kyogoku, Y.Koyama, S.Kobayashi, M.Yasuda, T.Kobayashi, Y.

(1993) Int.J.Pept.Protein Res. 41: 433-440


  • PubMed Abstract: 
  • The three-dimensional structure of human insulin-like growth factor-I has been determined through a combination of NMR measurements and distance geometry calculations. A total of 320 interatomic distance constraints, including 12 related to the disul ...

    The three-dimensional structure of human insulin-like growth factor-I has been determined through a combination of NMR measurements and distance geometry calculations. A total of 320 interatomic distance constraints, including 12 related to the disulfide bridges, were used in these calculations. The resulting structure is characterized by the presence of three helical rods corresponding to the sequence regions, Ala8-Cys18, Gly42-Cys48 and Leu54-Cys61. Furthermore, a turn structure and an extended structure exist in the Gly19-Gly22 and Phe23-Asn26 regions, respectively. Neglecting the N- and C-termini, with their expectedly high degree of mobility as well as a fluctuating C-domain, the r.m.s.d. value is 1.9 A for backbone atoms. Those of the three alpha-helical regions are 1.0, 0.9 and 0.8 A, respectively, 1.8 A being that for the total backbone atoms participating in the formation of these three helices, showing the good convergence of their spatial arrangements. The overall structure obtained here shows that the human IGF-I molecule folds into a spatial structure very similar to that of insulin in an aqueous solution.


    Related Citations: 
    • 1H-NMR Assignment and Secondary Structure of Human Insulin-Like Growth Factor-I (Igf-I) in Solution
      Sato, A.,Nishimura, S.,Ohkubo, T.,Kyogoku, Y.,Koyama, S.,Kobayashi, M.,Yasuda, T.,Kobayashi, Y.
      (1992) J.Biochem.(Tokyo) 111: 529


    Organizational Affiliation

    Institute for Protein Research, Osaka University, Japan.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
INSULIN-LIKE GROWTH FACTOR-I
A
70Homo 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: 100 
  • Conformers Submitted: 
  • Selection Criteria: target function 
  • Olderado: 1BQT Olderado

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1999-05-18
    Type: Initial release
  • Version 1.1: 2008-03-24
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance