PS210 is a potent and selective PDK1 activator with a Kd of 3 μM and targets the PIF-binding pocket of PDK1. PS210 is inactive against other protein kinases, including PDK1 downstream signaling components such as S6K, PKB/Akt or GSK3. In cells, the prodrug of PS210 (PS423) acts as a substrate-selective inhibitor of PDK1, inhibiting the phosphorylation and activation of S6K.
