Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 2-mer - A1B1 

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 40.63 kDa 
• Atom Count: 2,642 
• Modelled Residue Count: 332 
• Deposited Residue Count: 361 
• Unique protein chains: 2

 4J23

Low resolution crystal structure of the FGFR2D2D3/FGF1/SR128545 complex

• PDB DOI:  https://doi.org/10.2210/pdb4J23/pdb

• Classification: SIGNALING PROTEIN/transferase
• Organism(s): Homo sapiens
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2013-02-04 Released: 2014-02-19 
• Deposition Author(s): Kudlinzki, D., Saxena, K., Sreeramulu, S., Schieborr, U., Dreyer, M., Schreuder, H., Schwalbe, H.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 3.88 Å
• R-Value Free: 0.384 
• R-Value Work: 0.321 
• R-Value Observed: 0.324 

Literature

Molecular mechanism of SSR128129E, an extracellularly acting, small-molecule, allosteric inhibitor of FGF receptor signaling.

Herbert, C., Schieborr, U., Saxena, K., Juraszek, J., De Smet, F., Alcouffe, C., Bianciotto, M., Saladino, G., Sibrac, D., Kudlinzki, D., Sreeramulu, S., Brown, A., Rigon, P., Herault, J.P., Lassalle, G., Blundell, T.L., Rousseau, F., Gils, A., Schymkowitz, J., Tompa, P., Herbert, J.M., Carmeliet, P., Gervasio, F.L., Schwalbe, H., Bono, F.

(2013) Cancer Cell 23: 489-501

• PubMed: 23597563 
• DOI: https://doi.org/10.1016/j.ccr.2013.02.018
• Primary Citation of Related Structures:  
  4J23


• PubMed Abstract: 
  

The fibroblast growth factor (FGF)/fibroblast growth factor receptor (FGFR) signaling network plays an important role in cell growth, survival, differentiation, and angiogenesis. Deregulation of FGFR signaling can lead to cancer development. Here, we report an FGFR inhibitor, SSR128129E (SSR), that binds to the extracellular part of the receptor. SSR does not compete with FGF for binding to FGFR but inhibits FGF-induced signaling linked to FGFR internalization in an allosteric manner, as shown by crystallography studies, nuclear magnetic resonance, Fourier transform infrared spectroscopy, molecular dynamics simulations, free energy calculations, structure-activity relationship analysis, and FGFR mutagenesis. Overall, SSR is a small molecule allosteric inhibitor of FGF/FGFR signaling, acting via binding to the extracellular part of the FGFR.

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Organizational Affiliation: 

E2C and LGCR-SDI Department, Sanofi Research and Development, 31100 Toulouse, France.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Fibroblast growth factor receptor 2	A	223	Homo sapiens	Mutation(s): 0  Gene Names: BEK, FGFR2, KGFR, KSAM EC: 2.7.10.1
UniProt & NIH Common Fund Data Resources
Find proteins for P21802 (Homo sapiens) Explore P21802  Go to UniProtKB:  P21802
PHAROS:  P21802

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Fibroblast growth factor 1	B	138	Homo sapiens	Mutation(s): 0  Gene Names: FGF1, FGFA
UniProt & NIH Common Fund Data Resources
Find proteins for P05230 (Homo sapiens) Explore P05230  Go to UniProtKB:  P05230
PHAROS:  P05230

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 3.88 Å
• R-Value Free: 0.384 
• R-Value Work: 0.321 
• R-Value Observed: 0.324 
• Space Group: P 6₂ 2 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 210.674	α = 90
b = 210.674	β = 90
c = 72.512	γ = 120

Software Package:

Software Name	Purpose
PHENIX	refinement
PHASER	phasing
REFMAC	refinement

Structure Validation

Entry History 

Deposition Data

• Released Date: 2014-02-19 
Deposition Author(s): Kudlinzki, D., Saxena, K., Sreeramulu, S., Schieborr, U., Dreyer, M., Schreuder, H., Schwalbe, H.

Revision History  

• Version 1.0: 2014-02-19
  Type: Initial release
  
• Version 1.1: 2014-02-26
  Changes: Structure summary
• Version 1.2: 2019-07-17
  Changes: Data collection, Refinement description