3BAD

Crystal structure of D70A/H93G mutant of Human acidic fibroblast growth factor


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.253 
  • R-Value Work: 0.213 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

A logical OR redundancy within the Asx-Pro-Asx-Gly type I beta-turn motif.

Lee, J.Dubey, V.K.Longo, L.M.Blaber, M.

(2008) J.Mol.Biol. 377: 1251-1264

  • DOI: 10.1016/j.jmb.2008.01.055
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Turn secondary structure is essential to the formation of globular protein architecture. Turn structures are, however, much more complex than either alpha-helix or beta-sheet, and the thermodynamics and folding kinetics are poorly understood. Type I ...

    Turn secondary structure is essential to the formation of globular protein architecture. Turn structures are, however, much more complex than either alpha-helix or beta-sheet, and the thermodynamics and folding kinetics are poorly understood. Type I beta-turns are the most common type of reverse turn, and they exhibit a statistical consensus sequence of Asx-Pro-Asx-Gly (where Asx is Asp or Asn). A comprehensive series of individual and combined Asx mutations has been constructed within three separate type I 3:5 G1 bulge beta-turns in human fibroblast growth factor-1, and their effects on structure, stability, and folding have been determined. The results show a fundamental logical OR relationship between the Asx residues in the motif, involving H-bond interactions with main-chain amides within the turn. These interactions can be modulated by additional interactions with residues adjacent to the turn at positions i+4 and i+6. The results show that the Asx residues in the turn motif make a substantial contribution to the overall stability of the protein, and the Asx logical OR relationship defines a redundant system that can compensate for deleterious point mutations. The results also show that the stability of the turn is unlikely to be the prime determinant of formation of turn structure in the folding transition state.


    Organizational Affiliation

    Department of Biomedical Sciences, College of Medicine, Florida State University, Tallahassee, FL 32306-4300, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Heparin-binding growth factor 1
A, B
146Homo sapiensMutation(s): 2 
Gene Names: FGF1 (FGFA)
Find proteins for P05230 (Homo sapiens)
Go to Gene View: FGF1
Go to UniProtKB:  P05230
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

Download SDF File 
Download CCD File 
A, B
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.253 
  • R-Value Work: 0.213 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 35.212α = 90.00
b = 111.085β = 117.71
c = 36.835γ = 90.00
Software Package:
Software NamePurpose
HKL-2000data reduction
SCALEPACKdata scaling
CNSphasing
CNSrefinement
HKL-2000data collection

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

  • Deposited Date: 2007-11-07 
  • Released Date: 2008-04-15 
  • Deposition Author(s): Blaber, M., Lee, J.

Revision History 

  • Version 1.0: 2008-04-15
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance