The testis-specific USP26 is a deubiquitinating enzyme of the ubiquitin ligase Mdm2

The interaction between USP26 and Mdm2, and the subsequent deubiquitination of Mdm2, serves, most probably to regulate Mdm2. Future therapeutic modalities that interfere with the association between USP26 and Mdm2 will be used to destabilize the ligase in malignancies where it is upregulated.