8EIO

The complex of phosphorylated human delta F508 cystic fibrosis transmembrane conductance regulator (CFTR) with elexacaftor (VX-445), lumacaftor (VX-809) and ATP/Mg


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 2.80 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

Molecular structures reveal synergistic rescue of Delta 508 CFTR by Trikafta modulators.

Fiedorczuk, K.Chen, J.

(2022) Science 378: 284-290

  • DOI: https://doi.org/10.1126/science.ade2216
  • Primary Citation of Related Structures:  
    8EIG, 8EIO, 8EIQ, 8EJ1

  • PubMed Abstract: 

    The predominant mutation causing cystic fibrosis, a deletion of phenylalanine 508 (Δ508) in the cystic fibrosis transmembrane conductance regulator (CFTR), leads to severe defects in CFTR biogenesis and function. The advanced therapy Trikafta combines the folding corrector tezacaftor (VX-661), the channel potentiator ivacaftor (VX-770), and the dual-function modulator elexacaftor (VX-445). However, it is unclear how elexacaftor exerts its effects, in part because the structure of Δ508 CFTR is unknown. Here, we present cryo-electron microscopy structures of Δ508 CFTR in the absence and presence of CFTR modulators. When used alone, elexacaftor partially rectified interdomain assembly defects in Δ508 CFTR, but when combined with a type I corrector, did so fully. These data illustrate how the different modulators in Trikafta synergistically rescue Δ508 CFTR structure and function.


  • 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 regulator1,479Homo 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
GTEx:  ENSG00000001626 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP13569
Sequence Annotations
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  • Reference Sequence

Find similar proteins by:  Sequence   |   3D Structure  

Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
Cystic fibrosis transmembrane conductance regulator17Homo sapiensMutation(s): 0 
Gene Names: CFTRABCC7
EC: 5.6.1.6
Sequence Annotations
Expand
  • Reference Sequence
Small Molecules
Ligands 6 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
WJX (Subject of Investigation/LOI)
Query on WJX

Download Ideal Coordinates CCD File 
J [auth A](6P)-N-(1,3-dimethyl-1H-pyrazole-4-sulfonyl)-6-[3-(3,3,3-trifluoro-2,2-dimethylpropoxy)-1H-pyrazol-1-yl]-2-[(4S)-2,2,4-trimethylpyrrolidin-1-yl]pyridine-3-carboxamide
C26 H34 F3 N7 O4 S
MVRHVFSOIWFBTE-INIZCTEOSA-N
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
VX8
Query on VX8

Download Ideal Coordinates CCD File 
I [auth A]Lumacaftor
C24 H18 F2 N2 O5
UFSKUSARDNFIRC-UHFFFAOYSA-N
CLR
Query on CLR

Download Ideal Coordinates CCD File 
G [auth A]CHOLESTEROL
C27 H46 O
HVYWMOMLDIMFJA-DPAQBDIFSA-N
D12 (Subject of Investigation/LOI)
Query on D12

Download Ideal Coordinates CCD File 
H [auth A]DODECANE
C12 H26
SNRUBQQJIBEYMU-UHFFFAOYSA-N
MG
Query on MG

Download Ideal Coordinates CCD File 
C [auth A],
D [auth A]
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
Binding Affinity Annotations 
IDSourceBinding Affinity
VX8 BindingDB:  8EIO 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: 2.80 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: 2022-10-19
    Type: Initial release
  • Version 1.1: 2022-11-23
    Changes: Database references
  • Version 1.2: 2024-06-19
    Changes: Data collection