Description_x000D_ Packaging_x000D_ 5, 25 mg in glass bottle_x000D_ Biochem/physiol Actions_x000D_ ABL127 is a potent and selective inhibitor of Protein phosphatase methylesterase-1 (PME-1 or PPME-1). IC50 values were 11.1 nM and 6.4 nM in MDA-MB-231 and HEK 293T cells with no activity detected against >50 other serine hydrolases. PME-1 regulates the methylesterification state of protein phosphatase 2A (PP2A) and is implicated in cancer and neurodegeneration.