PS48 activates phosphoinositide-dependent protein kinase 1 (PDK1) by binding exclusively to PIF-binding pocket rather than the ATP binding site.
1) A. Stroba et al. “3,5-Diphenylpent-2-enoic Acids as Allosteric Activators of the Protein Kinase PDK1: Structure-Activity Relationships and Thermodynamic Characterization of Binding as Paradigms for PIF-Binding Pocket-Targeting Compounds”, J. Med. Chem, 2009, 52 (15), 4683-4693
2) L.D. Spate, et al. “PS48 can replace bovine serum albumin in pig embryo culture medium, and improve in vitro embryo development by phosphorylating AKT” Molecular Reproduction & Development 2015, DOI: 10.1002/mrd.22474.