1IIL

CRYSTAL STRUCTURE OF PRO253ARG APERT MUTANT FGF RECEPTOR 2 (FGFR2) IN COMPLEX WITH FGF2

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Free: 0.259 
  • R-Value Work: 0.237 
  • R-Value Observed: 0.237 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history. 


Literature

Structural basis for fibroblast growth factor receptor 2 activation in Apert syndrome.

Ibrahimi, O.A., Eliseenkova, A.V., Plotnikov, A.N., Yu, K., Ornitz, D.M., Mohammadi, M.

(2001) Proc Natl Acad Sci U S A 98: 7182-7187

  • DOI: 10.1073/pnas.121183798
  • Primary Citation of Related Structures:  
    1II4, 1IIL

  • PubMed Abstract: 

    • Apert syndrome (AS) is characterized by craniosynostosis (premature fusion of cranial sutures) and severe syndactyly of the hands and feet. Two activating mutations, Ser-252 --> Trp and Pro-253 --> Arg, in fibroblast growth factor receptor 2 (FGFR2) account for nearly all known cases of AS ...

    Apert syndrome (AS) is characterized by craniosynostosis (premature fusion of cranial sutures) and severe syndactyly of the hands and feet. Two activating mutations, Ser-252 --> Trp and Pro-253 --> Arg, in fibroblast growth factor receptor 2 (FGFR2) account for nearly all known cases of AS. To elucidate the mechanism by which these substitutions cause AS, we determined the crystal structures of these two FGFR2 mutants in complex with fibroblast growth factor 2 (FGF2). These structures demonstrate that both mutations introduce additional interactions between FGFR2 and FGF2, thereby augmenting FGFR2-FGF2 affinity. Moreover, based on these structures and sequence alignment of the FGF family, we propose that the Pro-253 --> Arg mutation will indiscriminately increase the affinity of FGFR2 toward any FGF. In contrast, the Ser-252 --> Trp mutation will selectively enhance the affinity of FGFR2 toward a limited subset of FGFs. These predictions are consistent with previous biochemical data describing the effects of AS mutations on FGF binding. Alterations in FGFR2 ligand affinity and specificity may allow inappropriate autocrine or paracrine activation of FGFR2. Furthermore, the distinct gain-of-function interactions observed in each crystal structure provide a model to explain the phenotypic variability among AS patients.

    Organizational Affiliation: 

    Department of Pharmacology, New York University School of Medicine, New York, NY 10016, USA.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
HEPARIN-BINDING GROWTH FACTOR 2A, B, C, D155Homo sapiensMutation(s): 2 
Gene Names: FGF2, FGFB
UniProt & NIH Common Fund Data Resources
Find proteins for P09038 (Homo sapiens)
Explore P09038 
Go to UniProtKB:  P09038
PHAROS:  P09038
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP09038
Protein Feature View
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
FIBROBLAST GROWTH FACTOR RECEPTOR 2E, F, G, H220Homo sapiensMutation(s): 1 
Gene Names: FGFR2, BEK, KGFR, KSAM
EC: 2.7.1.112 (PDB Primary Data), 2.7.10.1 (UniProt)
UniProt & NIH Common Fund Data Resources
Find proteins for P21802 (Homo sapiens)
Explore P21802 
Go to UniProtKB:  P21802
PHAROS:  P21802
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP21802
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Free: 0.259 
  • R-Value Work: 0.237 
  • R-Value Observed: 0.237 
  • Space Group: P 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 70.796α = 90.01
b = 72.49β = 89.82
c = 89.919γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
AMoREphasing
CNSrefinement

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2001-05-09
    Type: Initial release
  • Version 1.1: 2008-04-27
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2021-10-27
    Changes: Database references