Predicted to enable protein tag and sulfur carrier activity. Predicted to be involved in protein urmylation; tRNA thio-modification; and tRNA wobble uridine modification. Predicted to act upstream of or within tRNA processing. Predicted to be located in cytoplasm. Predicted to be active in nucleus. Is expressed in mandible; nervous system; and neural retina. Orthologous to human URM1 (ubiquitin related modifier 1). [provided by Alliance of Genome Resources, Apr 2022]