2FGF

THREE-DIMENSIONAL STRUCTURE OF HUMAN BASIC FIBROBLAST GROWTH FACTOR, A STRUCTURAL HOMOLOG OF INTERLEUKIN 1BETA

• PDB DOI: https://doi.org/10.2210/pdb2FGF/pdb

• Classification: GROWTH FACTOR
• Organism(s): Homo sapiens
• Mutation(s): No 


• Deposited: 1991-02-19 Released: 1992-01-15 
• Deposition Author(s): Zhang, J., Sprang, S.R.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.77 Å
• R-Value Work: 0.186 

Literature

Three-dimensional structure of human basic fibroblast growth factor, a structural homolog of interleukin 1 beta.

Zhang, J.D., Cousens, L.S., Barr, P.J., Sprang, S.R.

(1991) Proc Natl Acad Sci U S A 88: 3446-3450

• PubMed: 1849658 
• DOI: https://doi.org/10.1073/pnas.88.8.3446
• Primary Citation of Related Structures:  
  2FGF


• PubMed Abstract: 
  

  The three-dimensional structure of the 146-residue form of human basic fibroblast growth factor (bFGF), expressed as a recombinant protein in yeast, has been determined by x-ray crystallography to a resolution of 1.8 A. bFGF is composed entirely of beta-sheet structure, comprising a three-fold repeat of a four-stranded antiparallel beta-meander. The topology of bFGF is identical to that of interleukin 1 beta, showing that although the two proteins share only 10% sequence identity, bFGF, interleukin 1, and their homologs comprise a family of structurally related mitogenic factors. Analysis of the three-dimensional structure in light of functional studies of bFGF suggests that the receptor binding site and the positively charged heparin binding site correspond to adjacent but separate loci on the beta-barrel.

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Organizational Affiliation: 

Department of Biochemistry, University of Texas Southwestern Medical Center, Dallas 75235-9050.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 16.72 kDa 
• Atom Count: 1,097 
• Modelled Residue Count: 127 
• Deposited Residue Count: 146 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
HEPARIN-BINDING GROWTH FACTOR 2 PRECURSOR	A	146	Homo sapiens	Mutation(s): 0
UniProt & NIH Common Fund Data Resources
Find proteins for P09038 (Homo sapiens) Explore P09038  Go to UniProtKB:  P09038
PHAROS:  P09038 GTEx:  ENSG00000138685

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
SO4	B [auth A], C [auth A], D [auth A]	SULFATE ION O4 S QAOWNCQODCNURD-UHFFFAOYSA-L

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.77 Å
• R-Value Work: 0.186 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 42.07	α = 90
b = 86.61	β = 90
c = 31.93	γ = 90

Software Package:

Software Name	Purpose
X-PLOR	refinement

Structure Validation

Entry History 

Deposition Data

• Released Date: 1992-01-15 
Deposition Author(s): Zhang, J., Sprang, S.R.

Revision History  

• Version 1.0: 1992-01-15
  Type: Initial release
  
• Version 1.1: 2008-03-24
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2024-02-14
  Changes: Data collection, Database references, Derived calculations, Other