1AFC

STRUCTURAL STUDIES OF THE BINDING OF THE ANTI-ULCER DRUG SUCROSE OCTASULFATE TO ACIDIC FIBROBLAST GROWTH FACTOR

• PDB DOI: https://doi.org/10.2210/pdb1AFC/pdb

• Classification: GROWTH FACTOR
• Organism(s): Bos taurus
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 1993-07-13 Released: 1993-10-31 
• Deposition Author(s): Zhu, X., Hsu, B.T., Rees, D.C.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.70 Å
• R-Value Work: 0.204 
• R-Value Observed: 0.204 

Literature

Structural studies of the binding of the anti-ulcer drug sucrose octasulfate to acidic fibroblast growth factor.

Zhu, X., Hsu, B.T., Rees, D.C.

(1993) Structure 1: 27-34

• PubMed: 7520817 
• DOI: https://doi.org/10.1016/0969-2126(93)90006-3
• Primary Citation of Related Structures:  
  1AFC


• PubMed Abstract: 
  

  The anti-ulcer drug sucrose octasulfate (SOS) binds to fibroblast growth factors (FGFs), proteins which stimulate the growth and differentiation of several cell types, including stomach epithelial cells. It is believed that SOS stabilizes FGFs against acid denaturation in the stomach, thus enhancing their ability to stimulate healing of ulcerated tissue. SOS binds to the same site on FGF as heparin and other proteoglycans; in vivo, FGF must bind to cell-surface proteoglycans or to heparin before it can interact with FGF receptors and stimulate growth. The details of this process are not understood.

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Organizational Affiliation: 

Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena 91125.

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Biological Assembly 2  

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

Biological assembly 2 assigned by authors.

Biological Assembly 3  

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

Biological assembly 3 assigned by authors.

Biological Assembly 4  

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

Biological assembly 4 assigned by authors.

Biological Assembly 5  

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

Biological assembly 5 assigned by authors.

Biological Assembly 6  

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

Biological assembly 6 assigned by authors.

Biological Assembly 7  

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

Biological assembly 7 assigned by authors.

Biological Assembly 8  

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

Biological assembly 8 assigned by authors.

Macromolecule Content

• Total Structure Weight: 134.83 kDa 
• Atom Count: 8,304 
• Modelled Residue Count: 1,016 
• Deposited Residue Count: 1,120 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
ACIDIC FIBROBLAST GROWTH FACTOR	A, B, C, D, E, F, G, H	140	Bos taurus	Mutation(s): 0
UniProt
Find proteins for P03968 (Bos taurus) Explore P03968  Go to UniProtKB:  P03968

Oligosaccharides

Help

Entity ID: 2
Molecule	Chains	Length	2D Diagram	Glycosylation	3D Interactions
1,3,4,6-tetra-O-sulfo-beta-D-fructofuranose-(2-1)-2,3,4,6-tetra-O-sulfonato-alpha-D-glucopyranose	I, J, K, L, M, N, O, P	2		N/A
Glycosylation Resources
GlyTouCan:  G97555GV GlyCosmos:  G97555GV

Biologically Interesting Molecules (External Reference) 1 Unique

Entity ID: 2
ID	Chains	Name	Type/Class	2D Diagram	3D Interactions
PRD_900013	I, J, K, L, M, N, O, P	sucrose octasulfate	Oligosaccharide / Substrate analog

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.70 Å
• R-Value Work: 0.204 
• R-Value Observed: 0.204 
• Space Group: P 3₂ 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 110.6	α = 90
b = 110.6	β = 90
c = 172.2	γ = 120

Software Package:

Software Name	Purpose
X-PLOR	model building
X-PLOR	refinement
X-PLOR	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 1993-10-31 
Deposition Author(s): Zhu, X., Hsu, B.T., Rees, D.C.

Revision History  

• Version 1.0: 1993-10-31
  Type: Initial release
  
• Version 1.1: 2008-03-24
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 2.0: 2020-07-29
  Type: Remediation
  Reason: Carbohydrate remediation
  Changes: Advisory, Atomic model, Data collection, Database references, Derived calculations, Non-polymer description, Other, Structure summary
• Version 2.1: 2024-02-07
  Changes: Data collection, Database references, Structure summary