7SVR

The complex of dephosphorylated human cystic fibrosis transmembrane conductance regulator (CFTR) and Lumacaftor (VX-809)


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.90 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Mechanism of CFTR correction by type I folding correctors.

Fiedorczuk, K.Chen, J.

(2022) Cell 185: 158-168.e11

  • DOI: https://doi.org/10.1016/j.cell.2021.12.009
  • Primary Citation of Related Structures:  
    7SV7, 7SVD, 7SVR

  • PubMed Abstract: 

    Small molecule chaperones have been exploited as therapeutics for the hundreds of diseases caused by protein misfolding. The most successful examples are the CFTR correctors, which transformed cystic fibrosis therapy. These molecules revert folding defects of the ΔF508 mutant and are widely used to treat patients. To investigate the molecular mechanism of their action, we determined cryo-electron microscopy structures of CFTR in complex with the FDA-approved correctors lumacaftor or tezacaftor. Both drugs insert into a hydrophobic pocket in the first transmembrane domain (TMD1), linking together four helices that are thermodynamically unstable. Mutating residues at the binding site rendered ΔF508-CFTR insensitive to lumacaftor and tezacaftor, underscoring the functional significance of the structural discovery. These results support a mechanism in which the correctors stabilize TMD1 at an early stage of biogenesis, prevent its premature degradation, and thereby allosterically rescuing many disease-causing mutations.


  • Organizational Affiliation

    Laboratory of Membrane Biology and Biophysics, The Rockefeller University, New York, NY 10065, USA.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Cystic fibrosis transmembrane conductance regulator1,480Homo sapiensMutation(s): 0 
Gene Names: CFTRABCC7
EC: 5.6.1.6
Membrane Entity: Yes 
UniProt & NIH Common Fund Data Resources
Find proteins for P13569 (Homo sapiens)
Explore P13569 
Go to UniProtKB:  P13569
PHAROS:  P13569
GTEx:  ENSG00000001626 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP13569
Sequence Annotations
Expand
  • Reference Sequence

Find similar proteins by:  Sequence   |   3D Structure  

Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
Cystic fibrosis transmembrane conductance regulator19Homo sapiensMutation(s): 0 
Sequence Annotations
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
VX8 (Subject of Investigation/LOI)
Query on VX8

Download Ideal Coordinates CCD File 
C [auth A]Lumacaftor
C24 H18 F2 N2 O5
UFSKUSARDNFIRC-UHFFFAOYSA-N
Binding Affinity Annotations 
IDSourceBinding Affinity
VX8 BindingDB:  7SVR Kd: min: 4.78e+4, max: 7.28e+4 (nM) from 2 assay(s)
EC50: min: 2570, max: 2600 (nM) from 2 assay(s)
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.90 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Howard Hughes Medical Institute (HHMI)United States--
Cystic Fibrosis FoundationUnited States--

Revision History  (Full details and data files)

  • Version 1.0: 2022-01-12
    Type: Initial release
  • Version 1.1: 2022-01-19
    Changes: Database references
  • Version 1.2: 2024-02-28
    Changes: Data collection