5A46

FGFR1 in complex with dovitinib

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.63 Å
  • R-Value Free: 0.246 
  • R-Value Work: 0.178 
  • R-Value Observed: 0.182 

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Literature

Structural and Dynamic Insights Into the Energetics of Activation Loop Rearrangement in Fgfr1 Kinase.

Klein, T., Vajpai, N., Phillips, J.J., Davies, G., Holdgate, G.A., Phillips, C., Tucker, J.A., Norman, R.A., Scott, A.D., Higazi, D.R., Lowe, D., Thompson, G.S., Breeze, A.L.

(2015) Nat Commun 6: 7877

  • DOI: 10.1038/ncomms8877
  • Primary Citation of Related Structures:  
    5A46, 5A4C

  • PubMed Abstract: 

    • Protein tyrosine kinases differ widely in their propensity to undergo rearrangements of the N-terminal Asp-Phe-Gly (DFG) motif of the activation loop, with some, including FGFR1 kinase, appearing refractory to this so-called 'DFG flip'. Recent inhibitor-bound structures have unexpectedly revealed FGFR1 for the first time in a 'DFG-out' state ...

    Protein tyrosine kinases differ widely in their propensity to undergo rearrangements of the N-terminal Asp-Phe-Gly (DFG) motif of the activation loop, with some, including FGFR1 kinase, appearing refractory to this so-called 'DFG flip'. Recent inhibitor-bound structures have unexpectedly revealed FGFR1 for the first time in a 'DFG-out' state. Here we use conformationally selective inhibitors as chemical probes for interrogation of the structural and dynamic features that appear to govern the DFG flip in FGFR1. Our detailed structural and biophysical insights identify contributions from altered dynamics in distal elements, including the αH helix, towards the outstanding stability of the DFG-out complex with the inhibitor ponatinib. We conclude that the αC-β4 loop and 'molecular brake' regions together impose a high energy barrier for this conformational rearrangement, and that this may have significance for maintaining autoinhibition in the non-phosphorylated basal state of FGFR1.

    Organizational Affiliation: 

    Astbury Centre for Structural Molecular Biology, Faculty of Biological Sciences, University of Leeds, Leeds LS2 9JT, UK.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
FIBROBLAST GROWTH FACTOR RECEPTOR 1 (FMS-RELATED TYROSINE KINASE 2, PFEIFFER SYNDROME), ISOFORM CRA_BA, B386Homo sapiensMutation(s): 0 
Gene Names: FGFR1, BFGFR, CEK, FGFBR, FLG, FLT2, HBGFR
EC: 2.7.10.1
UniProt & NIH Common Fund Data Resources
Find proteins for P11362 (Homo sapiens)
Explore P11362 
Go to UniProtKB:  P11362
PHAROS:  P11362
GTEx:  ENSG00000077782 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP11362
Protein Feature View
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Small Molecules
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.63 Å
  • R-Value Free: 0.246 
  • R-Value Work: 0.178 
  • R-Value Observed: 0.182 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 209.8α = 90
b = 56.83β = 107.36
c = 65.74γ = 90
Software Package:
Software NamePurpose
BUSTERrefinement
XDSdata reduction

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2015-08-05
    Type: Initial release