Application

SJ-172550 may be used in MDMX and p53-mediated cell signaling studies.

Biochem/physiol Actions

SJ-17255 is a MDMX inhibitor. Similarly to MDM2, MDMX regulates p53. But in contrast to MDM2, MDMX appears to directly regulate p53 transcription. SJ-172550 is a first small-molecule inhibitor of MDMX with a low micromolar binding constant. It appears that SJ-172550 is binding to the p53-binding pocket of MDMX, thus liberating p53 to induce apoptosis.