6B0T

Structural Insights into the Induced-fit Inhibition of Fascin by a Small Molecule


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.80 Å
  • R-Value Free: 0.303 
  • R-Value Work: 0.265 
  • R-Value Observed: 0.267 

Starting Model: experimental
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This is version 1.4 of the entry. See complete history


Literature

Structural Insights into the Induced-fit Inhibition of Fascin by a Small-Molecule Inhibitor.

Huang, J.Dey, R.Wang, Y.Jakoncic, J.Kurinov, I.Huang, X.Y.

(2018) J Mol Biol 430: 1324-1335

  • DOI: https://doi.org/10.1016/j.jmb.2018.03.009
  • Primary Citation of Related Structures:  
    6B0T

  • PubMed Abstract: 

    Tumor metastasis is responsible for ~90% of all cancer deaths. One of the key steps of tumor metastasis is tumor cell migration and invasion. Filopodia are cell surface extensions that are critical for tumor cell migration. Fascin protein is the main actin-bundling protein in filopodia. Small-molecule fascin inhibitors block tumor cell migration, invasion, and metastasis. Here we present the structural basis for the mechanism of action of these small-molecule fascin inhibitors. X-ray crystal structural analysis of a complex of fascin and a fascin inhibitor shows that binding of the fascin inhibitor to the hydrophobic cleft between the domains 1 and 2 of fascin induces a ~35 o rotation of domain 1, leading to the distortion of both the actin-binding sites 1 and 2 on fascin. Furthermore, the crystal structures of an inhibitor alone indicate that the conformations of the small-molecule inhibitors are dynamic. Mutations of the inhibitor-interacting residues decrease the sensitivity of fascin to the inhibitors. Our studies provide structural insights into the molecular mechanism of fascin protein function as well as the action of small-molecule fascin inhibitors.


  • Organizational Affiliation

    Department of Physiology and Biophysics, Weill Cornell Medical College of Cornell University, New York, NY 10065, United States.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Fascin
A, B, C, D, E
A, B, C, D, E, F
487Homo sapiensMutation(s): 0 
Gene Names: FSCN1FAN1HSNSNL
UniProt & NIH Common Fund Data Resources
Find proteins for Q16658 (Homo sapiens)
Explore Q16658 
Go to UniProtKB:  Q16658
PHAROS:  Q16658
GTEx:  ENSG00000075618 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ16658
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.80 Å
  • R-Value Free: 0.303 
  • R-Value Work: 0.265 
  • R-Value Observed: 0.267 
  • Space Group: P 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 102.577α = 90
b = 59.255β = 90.03
c = 293.651γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
XDSdata reduction
XDSdata scaling
PHENIXphasing

Structure Validation

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Ligand Structure Quality Assessment 


Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Cancer Institute (NIH/NCI)United StatesR01CA193815

Revision History  (Full details and data files)

  • Version 1.0: 2018-04-18
    Type: Initial release
  • Version 1.1: 2018-05-09
    Changes: Data collection, Database references
  • Version 1.2: 2019-02-20
    Changes: Author supporting evidence, Data collection
  • Version 1.3: 2019-12-04
    Changes: Author supporting evidence
  • Version 1.4: 2023-10-04
    Changes: Data collection, Database references, Refinement description