Oncoprotein MDM2 is a ubiquitin ligase E3 for tumor suppressor p53

Abstract
The tumor suppressor p53 is degraded by the ubiquitin‐proteasome system. p53 was polyubiquitinated in the presence of E1, UbcH5 as E2 and MDM2 oncoprotein. A ubiquitin molecule bound MDM2 through sul...