7QI1 image
Deposition Date 2021-12-14
Release Date 2022-05-25
Last Version Date 2024-11-13
Entry Detail
PDB ID:
7QI1
Keywords:
PROTEIN TRANSPORT
Title:
Crystal structure of human 14-3-3 protein beta in complex with CFTR peptide pS753pS768 and PPI stabilizer CY007424
Biological Source:
Source Organism:
Homo sapiens (Taxon ID: 9606)
synthetic construct (Taxon ID: 32630)
Host Organism:
Escherichia coli BL21(DE3)
Method Details:
Experimental Method:
X-RAY DIFFRACTION
Resolution:
1.76 Å
R-Value Free:
0.24
R-Value Work:
0.19
R-Value Observed:
0.19
Space Group:
P 2 21 21
7QI1 validation report
Macromolecular Entities
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:14-3-3 protein theta
Chain IDs:A, B, E (auth: C), F (auth: D)
Chain Length:237
Number of Molecules:4
Biological Source:Homo sapiens
UniProt ID:S7N159 Pfam ID:PF00244
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Cystic fibrosis transmembrane conductance regulator
Gene (Uniprot):CFTR
Chain IDs:C (auth: F), D (auth: E)
Chain Length:28
Number of Molecules:2
Biological Source:Homo sapiens
UniProt ID:P13569 EC:2.7.4.3
Modified Residue
Compound ID Chain ID Parent Comp ID Details 2D Image
SEP C SER modified residue
Ligand Molecules
ARG
GLN
Q95
TYR
Primary Citation
Macrocycle-stabilization of its interaction with 14-3-3 increases plasma membrane localization and activity of CFTR.
Nat Commun 13 3586 3586 (2022)
PMID: 35739107 DOI: 10.1038/s41467-022-31206-6

Abstact

Impaired activity of the chloride channel CFTR is the cause of cystic fibrosis. 14-3-3 proteins have been shown to stabilize CFTR and increase its biogenesis and activity. Here, we report the identification and mechanism of action of a macrocycle stabilizing the 14-3-3/CFTR complex. This molecule rescues plasma membrane localization and chloride transport of F508del-CFTR and works additively with the CFTR pharmacological chaperone corrector lumacaftor (VX-809) and the triple combination Trikafta®. This macrocycle is a useful tool to study the CFTR/14-3-3 interaction and the potential of molecular glues in cystic fibrosis therapeutics.

Legend

Protein

Chemical

Disease

Primary Citation of related structures
7QI1