1K5U

Human acidic fibroblast growth factor. 141 amino acid form with amino terminal His tag with His93 replaced by Gly (H93G).


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.293 
  • R-Value Work: 0.219 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Alternative type I and I' turn conformations in the beta8/beta9 beta-hairpin of human acidic fibroblast growth factor.

Kim, J.Blaber, S.I.Blaber, M.

(2002) Protein Sci. 11: 459-466

  • Primary Citation of Related Structures:  1K5V

  • PubMed Abstract: 
  • Human acidic fibroblast growth factor (FGF-1) has a beta-trefoil structure, one of the fundamental protein superfolds. The X-ray crystal structures of wild-type and various mutant forms of FGF-1 have been solved in five different space groups: C2, C2 ...

    Human acidic fibroblast growth factor (FGF-1) has a beta-trefoil structure, one of the fundamental protein superfolds. The X-ray crystal structures of wild-type and various mutant forms of FGF-1 have been solved in five different space groups: C2, C222(1), P2(1) (four molecules/asu), P2(1) (three molecules/asu), and P2(1)2(1)2(1). These structures reveal two characteristically different conformations for the beta8/beta9 beta-hairpin comprising residue positions 90-94. This region in the wild-type FGF-1 structure (P2(1), four molecules/asu), a his-tagged His93-->Gly mutant (P2(1), three molecules/asu) and a his-tagged Asn106-->Gly mutant (P2(1)2(1)2(1)) adopts a 3:5 beta-hairpin known as a type I (1-4) G1 beta-bulge (containing a type I turn). However, a his-tagged form of wild-type FGF-1 (C222(1)) and a his-tagged Leu44-->Phe mutant (C2) adopt a 3:3 beta-hairpin (containing a type I' turn) for this same region. A feature that distinguishes these two types of beta-hairpin structures is the number and location of side chain positions with eclipsed C(beta) and main-chain carbonyl oxygen groups (Psi is equivalent to +60 degrees). The effects of glycine mutations upon stability, at positions within the hairpin, have been used to identify the most likely structure in solution. Type I' turns in the structural data bank are quite rare, and a survey of these turns reveals that a large percentage exhibit crystal contacts within 3.0 A. This suggests that many of the type I' turns in X-ray structures may be adopted due to crystal packing effects.


    Organizational Affiliation

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




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Acidic fibroblast growth factor
A, B, C
146Homo sapiensGene 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, C
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.293 
  • R-Value Work: 0.219 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 33.630α = 90.00
b = 97.710β = 104.30
c = 57.460γ = 90.00
Software Package:
Software NamePurpose
TNTphasing
SCALEPACKdata scaling
TNTrefinement
DENZOdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2002-02-27
    Type: Initial release
  • Version 1.1: 2008-04-27
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance