5M36 image
Deposition Date 2016-10-14
Release Date 2017-11-15
Last Version Date 2024-11-13
Entry Detail
PDB ID:
5M36
Keywords:
Title:
The molecular tweezer CLR01 stabilizes a disordered protein-protein interface
Biological Source:
Source Organism:
Homo sapiens (Taxon ID: 9606)
Host Organism:
Method Details:
Experimental Method:
Resolution:
2.45 Å
R-Value Free:
0.27
R-Value Work:
0.22
R-Value Observed:
0.22
Space Group:
P 21 21 21
Macromolecular Entities
Polymer Type:polypeptide(L)
Molecule:14-3-3 protein zeta/delta
Gene (Uniprot):YWHAZ
Chain IDs:A, B
Chain Length:229
Number of Molecules:2
Biological Source:Homo sapiens
Polymer Type:polypeptide(L)
Molecule:M-phase inducer phosphatase 3
Gene (Uniprot):CDC25C
Mutations:UNP residues 207-244
Chain IDs:C, D
Chain Length:38
Number of Molecules:2
Biological Source:Homo sapiens
Modified Residue
Compound ID Chain ID Parent Comp ID Details 2D Image
CSO A CYS modified residue
SEP C SER modified residue
Primary Citation
The Molecular Tweezer CLR01 Stabilizes a Disordered Protein-Protein Interface.
J. Am. Chem. Soc. 139 16256 16263 (2017)
PMID: 29039919 DOI: 10.1021/jacs.7b07939

Abstact

Protein regions that are involved in protein-protein interactions (PPIs) very often display a high degree of intrinsic disorder, which is reduced during the recognition process. A prime example is binding of the rigid 14-3-3 adapter proteins to their numerous partner proteins, whose recognition motifs undergo an extensive disorder-to-order transition. In this context, it is highly desirable to control this entropy-costly process using tailored stabilizing agents. This study reveals how the molecular tweezer CLR01 tunes the 14-3-3/Cdc25CpS216 protein-protein interaction. Protein crystallography, biophysical affinity determination and biomolecular simulations unanimously deliver a remarkable finding: a supramolecular "Janus" ligand can bind simultaneously to a flexible peptidic PPI recognition motif and to a well-structured adapter protein. This binding fills a gap in the protein-protein interface, "freezes" one of the conformational states of the intrinsically disordered Cdc25C protein partner and enhances the apparent affinity of the interaction. This is the first structural and functional proof of a supramolecular ligand targeting a PPI interface and stabilizing the binding of an intrinsically disordered recognition motif to a rigid partner protein.

Legend

Protein

Chemical

Disease

Primary Citation of related structures