1YTO

Crystal Structure of Gly19 deletion Mutant of Human Acidic Fibroblast Growth Factor


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.10 Å
  • R-Value Free: 0.250 
  • R-Value Work: 0.198 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Conversion of type I 4:6 to 3:5 beta-turn types in human acidic fibroblast growth factor: Effects upon structure, stability, folding, and mitogenic function.

Lee, J.Dubey, V.K.Somasundaram, T.Blaber, M.

(2006) Proteins 62: 686-697

  • DOI: 10.1002/prot.20808
  • Primary Citation of Related Structures:  
    1Z2V, 1Z4S, 1YTO, 2AQZ

  • PubMed Abstract: 
  • Human acidic fibroblast growth factor (FGF-1) is a member of the beta-trefoil superfold, a protein architecture that exhibits a characteristic threefold axis of structural symmetry. FGF-1 contains 11 beta-turns, the majority being type I 3:5; however ...

    Human acidic fibroblast growth factor (FGF-1) is a member of the beta-trefoil superfold, a protein architecture that exhibits a characteristic threefold axis of structural symmetry. FGF-1 contains 11 beta-turns, the majority being type I 3:5; however, a type I 4:6 turn is also found at three symmetry-related locations. The relative uniqueness of the type I 4:6 turn in the FGF-1 structure suggests it may play a key role in the stability, folding, or function of the protein. To test this hypothesis a series of deletion mutations were constructed, the aim of which was to convert existing type I 4:6 turns at two locations into type I 3:5 turns. The results show it is possible to successfully substitute the type I 4:6 turn by a type I 3:5 turn with minimal impact upon protein stability or folding. Thus, these different turn structures, even though they differ in length, exhibit similar energetic properties. Additional sequence swapping mutations within the introduced type I 3:5 turns suggests that the turn sequence primarily affects stability but not turn structure (which appears dictated primarily by the local environment). Although the results suggest that a stable, foldable beta-trefoil protein may be designed utilizing a single turn type (type I 3:5), a type I 4:6 turn at turn 1 of FGF-1 appears essential for efficient mitogenic function.


    Organizational Affiliation

    Department of Chemistry and Biochemistry, Florida State University, Tallahassee, Florida 32306-4300, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Heparin-binding growth factor 1ABCD145Homo sapiensMutation(s): 0 
Gene Names: FGF1FGFA
Find proteins for P05230 (Homo sapiens)
Explore P05230 
Go to UniProtKB:  P05230
NIH Common Fund Data Resources
PHAROS  P05230
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: 0.250 
  • R-Value Work: 0.198 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 51.39α = 90
b = 109.17β = 107.19
c = 68.98γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
CNSrefinement
CNSphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

  • Deposited Date: 2005-02-10 
  • Released Date: 2006-01-24 
  • Deposition Author(s): Lee, J., Blaber, M.

Revision History 

  • Version 1.0: 2006-01-24
    Type: Initial release
  • Version 1.1: 2008-04-30
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance