Synonyms:Antigen MZ2 D, Cancer/testis antigen 1.3, CT1.3, HIP8, HYPD, MAGE 3 antigen, MAGE3, MAGEA3, MAGE-A3, MAGEA6, melanoma antigen family A, 3, Melanoma associated antigen 3 Background:Proposed to enhance ubiquitin ligase activity of RING-type zinc finger-containing E3 ubiquitin-protein ligases. May enhance ubiquitin ligase activity of TRIM28 and stimulate p53/TP53 ubiquitination by TRIM28. Proposed to act through recruitment and/or stabilization of the Ubl-conjugating enzyme(E2) at the E3:substrate complex. May play a role in embryonal development and tumor transformation or aspects of tumor progression. In vitro promotes cell viability in melanoma cell lines. Antigen recognized on a melanoma by autologous cytolytic T-lymphocytes.