7SV7

The complex of phosphorylated human cystic fibrosis transmembrane conductance regulator (CFTR) with ATP/Mg and Tezacaftor (VX-661)


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.80 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 1.1 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: 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 ...

    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; Howard Hughes Medical Institute, Chevy Chase, MD 20815, USA. Electronic address: juechen@rockefeller.edu.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Cystic fibrosis transmembrane conductance regulatorA1,480Homo sapiensMutation(s): 1 
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
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP13569
Protein Feature View
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  • Reference Sequence

Find similar proteins by:  Sequence   |   3D Structure  

Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Cystic fibrosis transmembrane conductance regulatorB17Homo sapiensMutation(s): 0 
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 8 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CV6
Query on CV6

Download Ideal Coordinates CCD File 
Q [auth A]Tezacaftor
C26 H25 F3 N2 O6
KHBZKTLEXQUHCT-UHFFFAOYSA-N
 Ligand Interaction
ATP
Query on ATP

Download Ideal Coordinates CCD File 
E [auth A],
F [auth A]
ADENOSINE-5'-TRIPHOSPHATE
C10 H16 N5 O13 P3
ZKHQWZAMYRWXGA-KQYNXXCUSA-N
 Ligand Interaction
CLR
Query on CLR

Download Ideal Coordinates CCD File 
L [auth A],
M [auth A]
CHOLESTEROL
C27 H46 O
HVYWMOMLDIMFJA-DPAQBDIFSA-N
 Ligand Interaction
PJ8
Query on PJ8

Download Ideal Coordinates CCD File 
O [auth A]heptadecane
C17 H36
NDJKXXJCMXVBJW-UHFFFAOYSA-N
 Ligand Interaction
C14
Query on C14

Download Ideal Coordinates CCD File 
N [auth A]TETRADECANE
C14 H30
BGHCVCJVXZWKCC-UHFFFAOYSA-N
 Ligand Interaction
D12
Query on D12

Download Ideal Coordinates CCD File 
I [auth A],
J [auth A],
K [auth A],
P [auth A]
DODECANE
C12 H26
SNRUBQQJIBEYMU-UHFFFAOYSA-N
 Ligand Interaction
DD9
Query on DD9

Download Ideal Coordinates CCD File 
G [auth A],
H [auth A]
nonane
C9 H20
BKIMMITUMNQMOS-UHFFFAOYSA-N
 Ligand Interaction
MG
Query on MG

Download Ideal Coordinates CCD File 
C [auth A],
D [auth A]
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.80 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