These proteins, called MDM2 and MDMX, become overactive in cancer and break down p53. Researchers have developed drugs to block MDM2 or MDMX, but targeting just one of these proteins is often not ...

Nevertheless, MdmX has been reported to migrate at M r 70–90K (depending on the method used), and upon in vitro translation it co-migrates with Mdm2 at M r ∼ 90K on SDS–polyacrylamide gels 9.