ISDA

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, synthetic construct

Host Organism:

Escherichia coli BL21(DE3)

PDB Version:

Deposition Date:

2021-12-14

Release Date:

2022-05-25

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

Download Validation Report

Macromolecular Entities

Protein Blast

Polymer Type:polypeptide(L)
Description: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 EC:2.7.4.3

Protein Blast

Polymer Type:polypeptide(L)
Description:Cystic fibrosis transmembrane conductance regulator
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.

Stevers, L.M, Wolter, M, Carlile, G.W, Macdonald, D, Richard, L, Gielkens, F, Hanrahan, J.W, Thomas, D.Y, Chakka, S.K, Peterson, M.L, Thomas, H, Brunsveld, L, Ottmann, C.Show

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