E3 ubiquitin ligase that plays a crucial role in the activation of the IKBKE-dependent branch of the type I interferon signaling pathway (PubMed:24882218, PubMed:31694946). In concert with the ubiquitin-conjugating E2 enzyme UBE2K, synthesizes unanchored 'Lys- 48'-linked polyubiquitin chains that promote the oligomerization and autophosphorylation of IKBKE leading to stimulation of an antiviral response (PubMed:24882218). Also ubiquitinates MYC and inhibits its transcription activation activity, maintaining the pluripotency of embryonic stem cells (By similarity). Promotes the association of unanchored 'Lys-48'-polyubiquitin chains with DHX16 leading to enhanced RIGI-mediated innate antiviral immune response (PubMed:35263596). {ECO:0000250|UniProtKB:Q8BGE7, ECO:0000269|PubMed:24882218, ECO:0000269|PubMed:31694946, ECO:0000269|PubMed:35263596}. (Microbial infection) Ubiquitinates ebolavirus protein VP35 leading to enhanced viral transcriptase activity. . This is the function of Ensembl gene identifier ENSG00000121236 (TRIM6, tripartite motif containing 6).