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PTPs as privileged targets of PYD. (a) Representative MS/MS spectra of PTPN1 (PTP1B) labeled by PYD probe. (b) PYD probe preferentially modifies the recombinant oxidized form of PTP1B. (c) Molecular docking (using AutoDock Vina) of PYD into catalytic pocket of PTPN1 (PDB: 1OET). (d) Abbreviated sequence alignment of PTPs that harbor a Cys-SOH labeled by PYD probe.
