E3 ubiquitin-protein ligase that mediates the ubiquitination of phosphorylated BCL2L11. Also mediates the UBE2D1-dependent ubiquitination of NEFL (By similarity). Plays a neuroprotective function (By similarity). May play a role in neuronal rapid ischemic tolerance. S-ubiquitinyl-[E2 ubiquitin-conjugating enzyme]-L-cysteine + [acceptor protein]-L-lysine = [E2 ubiquitin-conjugating enzyme]-L-cysteine + N(6)-ubiquitinyl-[acceptor protein]-L-lysine. Protein modification; protein ubiquitination. Interacts with myosin V; myosin V may not be a substrate for ubiquitination (By similarity). Interacts with NEFL (By similarity). Interacts with phosphorylated BCL2L11. The interaction with myosin V is dependent upon its NHL repeats, which form a beta-propeller (NHL) domain containing six blades. RING-type zinc finger-dependent and UBE2D1-dependent autoubiquitination. Belongs to the TRIM/RBCC family.