2NTD

Human fibroblast growth factor-1 (140 amino acid form) with Cys117Val/Pro134Cys mutations


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.52 Å
  • R-Value Free: 0.229 
  • R-Value Work: 0.173 
  • R-Value Observed: 0.173 

Starting Model: experimental
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wwPDB Validation   3D Report Full Report


This is version 1.4 of the entry. See complete history


Literature

Spackling the Crack: Stabilizing Human Fibroblast Growth Factor-1 by Targeting the N and C terminus beta-Strand Interactions

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

(2007) J Mol Biol 371: 256-268

  • DOI: https://doi.org/10.1016/j.jmb.2007.05.065
  • Primary Citation of Related Structures:  
    2HW9, 2HWA, 2HWM, 2HZ9, 2NTD

  • PubMed Abstract: 

    The beta-trefoil protein human fibroblast growth factor-1 (FGF-1) is made up of a six-stranded antiparallel beta-barrel closed off on one end by three beta-hairpins, thus exhibiting a 3-fold axis of structural symmetry. The N and C terminus beta-strands hydrogen bond to each other and their interaction is postulated from both NMR and X-ray structure data to be important in folding and stability. Specific mutations within the adjacent N and C terminus beta-strands of FGF-1 are shown to provide a substantial increase in stability. This increase is largely correlated with an increased folding rate constant, and with a smaller but significant decrease in the unfolding rate constant. A series of stabilizing mutations are subsequently combined and result in a doubling of the DeltaG value of unfolding. When taken in the context of previous studies of stabilizing mutations, the results indicate that although FGF-1 is known for generally poor thermal stability, the beta-trefoil architecture appears capable of substantial thermal stability. Targeting stabilizing mutations within the N and C terminus beta-strand interactions of a beta-barrel architecture may be a generally useful approach to increase protein stability. Such stabilized mutations of FGF-1 are shown to exhibit significant increases in effective mitogenic potency, and may prove useful as "second generation" forms of FGF-1 for application in angiogenic therapy.


  • Organizational Affiliation

    Department of Biomedical Sciences, Florida State University, Tallahassee FL 32306, USA.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Acidic fibroblast growth factor 1
A, B, C, D
146Homo sapiensMutation(s): 2 
Gene Names: FGF1FGFA
UniProt & NIH Common Fund Data Resources
Find proteins for P05230 (Homo sapiens)
Explore P05230 
Go to UniProtKB:  P05230
PHAROS:  P05230
GTEx:  ENSG00000113578 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP05230
Sequence Annotations
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
FMT
Query on FMT

Download Ideal Coordinates CCD File 
E [auth A]
F [auth A]
G [auth A]
H [auth B]
I [auth B]
E [auth A],
F [auth A],
G [auth A],
H [auth B],
I [auth B],
J [auth B],
K [auth C],
L [auth C],
M [auth C],
N [auth D],
O [auth D]
FORMIC ACID
C H2 O2
BDAGIHXWWSANSR-UHFFFAOYSA-N
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.52 Å
  • R-Value Free: 0.229 
  • R-Value Work: 0.173 
  • R-Value Observed: 0.173 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 60.6α = 90
b = 108.33β = 104.97
c = 60.92γ = 90
Software Package:
Software NamePurpose
CNSrefinement
HKL-3000data collection
HKL-3000data reduction
HKL-3000data scaling
CNSphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2007-07-24
    Type: Initial release
  • Version 1.1: 2008-05-01
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2021-10-20
    Changes: Database references
  • Version 1.4: 2023-08-30
    Changes: Data collection, Refinement description