Tripartite motif-containing protein 29 (TRIM29)

Tripartite motif-containing protein 29 (TRIM29) is a member of the TRIM protein family characterized by the absence of a RING domain but containing B-box and coiled-coil domains. It acts as a scaffold protein facilitating the assembly of DNA repair proteins at damaged chromatin and is required for robust DNA damage response signaling. TRIM29 functions as an E3 ubiquitin ligase via its B-box domain, targeting proteins such as STING, NEMO/IKBKG, and MAVS for ubiquitination and degradation, thereby negatively regulating the innate immune response to DNA and RNA viruses. Additionally, TRIM29 regulates keratin distribution in epithelial cells, modulates the cell cycle and apoptosis via negative regulation of p53, and participates in signal transduction and transcriptional regulation. TRIM29 plays context-dependent roles in cancer, acting as a tumorigenic factor or, in some contexts, as a tumor suppressor. Epigenetic modifications, such as DNA methylation, control its expression and are linked to disease progression and resistance to therapy. As such, TRIM29 is considered a therapeutic target in cancer and immune-related diseases, but no direct drugs have been established targeting it.

Other names

Tripartite motif-containing protein 29TRIM29ATDCAtaxia telangiectasia group D-associated proteinFLJ36085tripartite motif protein TRIM29

There are currently no drugs with described mechanisms of action directly targeting TRIM29. Mechanistically, inhibition or modulation of TRIM29 E3 ligase activity could affect: - Ubiquitination and degradation of STING, NEMO/IKBKG, MAVS (innate immune regulators) - p53 cytoplasmic sequestration and acetylation status - Chromatin and DNA repair complex assembly