Human Acidic Fibroblast Growth Factor. 141 Amino Acid Form with Amino Terminal His Tag and Leu 44 Replaced with Phe (L44F), Leu 73 Replaced with Val (L73V), Val 109 Replaced with Leu (V109L) and Cys 117 Replaced with Val (C117V).

Experimental Data Snapshot

  • Resolution: 1.70 Å
  • R-Value Free: 0.249 
  • R-Value Work: 0.220 
  • R-Value Observed: 0.221 

Starting Model: experimental
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This is version 1.5 of the entry. See complete history


Accommodation of a highly symmetric core within a symmetric protein superfold

Brych, S.R.Kim, J.Logan, T.M.Blaber, M.

(2003) Protein Sci 12: 2704-2718

  • DOI: https://doi.org/10.1110/ps.03374903
  • Primary Citation of Related Structures:  
    1JY0, 1M16, 1NZK, 1P63

  • PubMed Abstract: 

    An alternative core packing group, involving a set of five positions, has been introduced into human acidic FGF-1. This alternative group was designed so as to constrain the primary structure within the core region to the same threefold symmetry present in the tertiary structure of the protein fold (the beta-trefoil superfold). The alternative core is essentially indistinguishable from the WT core with regard to structure, stability, and folding kinetics. The results show that the beta-trefoil superfold is compatible with a threefold symmetric constraint on the core region, as might be the case if the superfold arose as a result of gene duplication/fusion events. Furthermore, this new core arrangement can form the basis of a structural "building block" that can greatly simplify the de novo design of beta-trefoil proteins by using symmetric structural complementarity. Remaining asymmetry within the core appears to be related to asymmetry in the tertiary structure associated with receptor and heparin binding functionality of the growth factor.

  • Organizational Affiliation

    Kasha Laboratory, Institute of Molecular Biophysics and Department of Chemistry and Biochemistry, Florida State University, Tallahassee, Florida 32306-4380, USA.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
acidic fibroblast growth factor
A, B
146Homo sapiensMutation(s): 4 
UniProt & NIH Common Fund Data Resources
Find proteins for P05230 (Homo sapiens)
Explore P05230 
Go to UniProtKB:  P05230
GTEx:  ENSG00000113578 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP05230
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 1.70 Å
  • R-Value Free: 0.249 
  • R-Value Work: 0.220 
  • R-Value Observed: 0.221 
  • Space Group: C 2 2 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 74.18α = 90
b = 97.013β = 90
c = 108.871γ = 90
Software Package:
Software NamePurpose
HKL-2000data collection
SCALEPACKdata scaling
HKL-2000data reduction

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2003-08-05
    Type: Initial release
  • Version 1.1: 2008-04-28
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2018-03-14
    Changes: Database references
  • Version 1.4: 2021-10-27
    Changes: Database references, Derived calculations
  • Version 1.5: 2024-02-14
    Changes: Data collection, Refinement description