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Updated: Jun 10, 2026

Identification of Mediators of T-cell Receptor Signaling via the Screening of Chemical Inhibitor Libraries
Published on: January 22, 2019
A focused library of protein tyrosine phosphatase inhibitors
Anthony B Comeau1, David A Critton, Rebecca Page
1Department of Chemistry, Brown University, 324 Brook Street, Box H, Providence, Rhode Island 02912, USA.
Abstract:
Protein tyrosine phosphatases such as PTP1B and YopH are potential targets for the development of therapeutic agents against a variety of pathological conditions including diabetes, obesity, and infection by the bacterium Yersinia pestis. A focused library of bidentate α-ketoacid-based inhibitors has been screened against several tyrosine phosphatases. Compound 2a has IC(50) values of 43 and 220 nM against YopH and PTP1B, respectively, and shows a 30-fold selectivity for PTP1B over the closely related phosphatase TCPTP.
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