A cell-permeable sulfonyl acrylonitrile compound that acts as a potent and irreversible inhibitor of protein phosphatase methylesterase-1 (PME-1; IC50=600nM and 2.5uM in human cell lysates and in HEK 293T cells, (respectively) with 100-fold greater selectivity over other serine hydrolases; does not function as a general thiol-reactive probe. Shown to lower demethylated PP2A levels by ~80% at 20uM with elevated methylated PP2A (protein phosphatase 2A) form in PME-1 overexpressing HEK 293T cells.Formula:C19H13FN3O6S2Molecular Weight:462.6Solubility:DMSO (50mg/ml)Storage and Stability:Lyophilized powder may be stored at -20°C. Stable for 12 months at -20°C. Reconstitute with sterile buffer or dH2O. Aliquot to avoid repeated freezing and thawing. Store at -20°C. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap. Further dilutions can be made in assay buffer.
