4TYO image
Deposition Date 2014-07-08
Release Date 2014-08-20
Last Version Date 2023-12-27
Entry Detail
PDB ID:
4TYO
Title:
PPIase in complex with a non-phosphate small molecule inhibitor.
Biological Source:
Source Organism:
Homo sapiens (Taxon ID: 9606)
Host Organism:
Method Details:
Experimental Method:
Resolution:
1.75 Å
R-Value Free:
0.21
R-Value Work:
0.18
R-Value Observed:
0.18
Space Group:
C 1 2 1
Macromolecular Entities
Polymer Type:polypeptide(L)
Molecule:Peptidyl-prolyl cis-trans isomerase NIMA-interacting 1
Gene (Uniprot):PIN1
Mutations:K77Q, K82Q
Chain IDs:A, B
Chain Length:123
Number of Molecules:2
Biological Source:Homo sapiens
Primary Citation
Structure-based design of novel human Pin1 inhibitors (III): Optimizing affinity beyond the phosphate recognition pocket.
Bioorg.Med.Chem.Lett. 24 4187 4191 (2014)
PMID: 25091930 DOI: 10.1016/j.bmcl.2014.07.044

Abstact

The design of potent Pin1 inhibitors has been challenging because its active site specifically recognizes a phospho-protein epitope. The de novo design of phosphate-based Pin1 inhibitors focusing on the phosphate recognition pocket and the successful replacement of the phosphate group with a carboxylate have been previously reported. The potency of the carboxylate series is now further improved through structure-based optimization of ligand-protein interactions in the proline binding site which exploits the H-bond interactions necessary for Pin1 catalytic function. Further optimization using a focused library approach led to the discovery of low nanomolar non-phosphate small molecular Pin1 inhibitors. Structural modifications designed to improve cell permeability resulted in Pin1 inhibitors with low micromolar anti-proliferative activities against cancer cells.

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Primary Citation of related structures