Predicted to enable several functions, including p53 binding activity; ubiquitin protein ligase binding activity; and ubiquitin-like protein transferase activity. Involved in several processes, including positive regulation of autophagy of mitochondrion in response to mitochondrial depolarization; positive regulation of dendrite extension; and regulation of protein stability. Located in mitochondrion. Orthologous to human MUL1 (mitochondrial E3 ubiquitin protein ligase 1). [provided by Alliance of Genome Resources, Apr 2022]