ISDA

Deposition Date 2020-03-02

Release Date 2021-03-31

Last Version Date 2024-11-13

Entry Detail

PDB ID:

6Y7T

Keywords:

PEPTIDE BINDING PROTEIN

Title:

Engineered conjugation of lysine-specific molecular tweezers with ExoS derived peptidic inhibitor enhance affinity towards target protein 14-3-3 through ditopic binding

Biological Source:

Source Organism:

Homo sapiens (Taxon ID: 9606)
Pseudomonas aeruginosa (Taxon ID: 287)

Host Organism:

Escherichia coli

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

2.50 Å

R-Value Free:

0.26

R-Value Work:

0.21

R-Value Observed:

0.22

Space Group:

I 1 2 1

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Macromolecular Entities

Protein Blast

Polymer Type:polypeptide(L)
Molecule:14-3-3 protein sigma
Gene (Uniprot):SFN
Chain IDs:A, D (auth: F), E (auth: K), F (auth: P)
Chain Length:253
Number of Molecules:4
Biological Source:Homo sapiens

UniProt ID:P31947 Pfam ID:PF00244

Protein Blast

Polymer Type:polypeptide(L)
Molecule:Exoenzyme S
Chain IDs:B (auth: D), C (auth: E)
Chain Length:11
Number of Molecules:2
Biological Source:Pseudomonas aeruginosa

UniProt ID:G3XDA1

Modified Residue

Compound ID	Chain ID	Parent Comp ID	Details	2D Image
CSO	A	CYS	modified residue

Ligand Molecules

GOL

TWZ

Primary Citation

Supramolecular Enhancement of a Natural 14-3-3 Protein Ligand.

Guillory, X, Hadrovic, I, de Vink, P.J, Sowislok, A, Brunsveld, L, Schrader, T, Ottmann, C, Bier, D, Mittal, S, Bravo-Rodriguez, K, Sowislok, A, Guillory, X, Briels, J, Heid, C, Bartel, M, Wettig, B, Brunsveld, L, Sanchez-Garcia, E, Schrader, T, Ottmann, C, Bier, D, Rose, R, Bravo-Rodriguez, K, Bartel, M, Ramirez-Anguita, J.M, Dutt, S, Wilch, C, Klarner, F.G, Sanchez-Garcia, E, Schrader, T, Ottmann, C.Show

J.Am.Chem.Soc. 143 13495 13500 (2021)

PMID: 34427424 DOI: 10.1021/jacs.1c07095

Abstact

Rational design of protein-protein interaction (PPI) inhibitors is challenging. Connecting a general supramolecular protein binder with a specific peptidic ligand provides a novel conceptual approach. Thus, lysine-specific molecular tweezers were conjugated to a peptide-based 14-3-3 ligand and produced a strong PPI inhibitor with 100-fold elevated protein affinity. X-ray crystal structure elucidation of this supramolecular directed assembly provides unique molecular insight into the binding mode and fully aligns with Molecular Dynamics (MD) simulations. This new supramolecular chemical biology concept opens the path to novel chemical tools for studying PPIs.

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Primary Citation of related structures