Download MendeleyInhibition of low molecular weight protein tyrosine phosphatase by an induced-fit mechanism.
He, R., Wang, J., Yu, Z.H., Zhang, R.Y., Liu, S., Wu, L., Zhang, Z.Y.(2016) J Med Chem
- PubMed: 27676368
- DOI: https://doi.org/10.1021/acs.jmedchem.6b00993
- Primary Citation of Related Structures:
5KQG, 5KQL, 5KQM, 5KQP - PubMed Abstract:
The low molecular weight protein tyrosine phosphatase (LMW-PTP) is a regulator of a number of signaling pathways and has been implicated as a potential target for oncology and diabetes/obesity. There is significant therapeutic interest in developing potent and selective inhibitors to control LMW-PTP activity. We report the discovery of a novel class of LMW-PTP inhibitors derived from sulfophenyl acetic amide (SPAA), some of which exhibit greater than 50-fold preference for LMW-PTP over a large panel of PTPs. X-ray crystallography reveals that binding of SPAA-based inhibitors induces a striking conformational change in the LMW-PTP active site, leading to the formation of a previously undisclosed hydrophobic pocket to accommodate the α-phenyl ring in the ligand. This induced-fit mechanism is likely a major contributor responsible for the exquisite inhibitor selectivity.
Organizational Affiliation:
Department of Medicinal Chemistry and Molecular Pharmacology, Department of Chemistry, Center for Cancer Research, and Institute for Drug Discovery, Purdue University , 720 Clinic Drive, West Lafayette, Indiana 47907, United States.
