Tripartite motif-containing protein 2 (TRIM2)

Tripartite motif-containing protein 2 (TRIM2) is a member of the TRIM-NHL family and functions as a RING-type E3 ubiquitin ligase predominantly expressed in the brain[1][2][3]. It features a tripartite domain structure, including a RING finger domain (essential for E3 ligase activity), B-boxes, a coiled-coil region, filamin domain, and C-terminal NHL repeats[1][2]. TRIM2 is critical for neuronal development, axon specification, and neuroprotection[1][2]. Its principal known substrate is the neurofilament light chain (NF-L), and its activity regulates NF-L turnover and axonal integrity[2]. Dysregulation or deficiency of TRIM2 is associated with neurodegenerative diseases, especially Charcot-Marie-Tooth disease, type 2R, and possibly Alzheimer’s disease due to altered microRNA-mediated expression[1][2][3]. No approved drugs currently interact directly with TRIM2, but its molecular characteristics establish it as an emerging therapeutic target for neurodegenerative and neurodevelopmental disorders.

Other names

TRIM2KIAA0517RNF86RING finger protein 86RING-type E3 ubiquitin transferase TRIM2CMT2RCharcot-Marie-Tooth disease type 2R protein

For potential drugs targeting TRIM2, the likely mechanism would involve modulation of its E3 ubiquitin ligase activity, for instance, influencing its ability to ubiquitinate substrates such as neurofilament light chain (NF-L)[2]. Indirect modulation could involve microRNAs regulating TRIM2 expression[3].