Predicted to enable ubiquitin protein ligase binding activity. Acts upstream of or within several processes, including adipose tissue development; negative regulation of BMP signaling pathway; and negative regulation of collateral sprouting in absence of injury. Located in lipid droplet and synapse. Is expressed in dorsal root ganglion; olfactory epithelium; and trigeminal ganglion. Used to study Troyer syndrome. Human ortholog(s) of this gene implicated in Troyer syndrome. Orthologous to human SPART (spartin). [provided by Alliance of Genome Resources, Apr 2022]