Predicted to enable URM1 activating enzyme activity; nucleotidyltransferase activity; and sulfurtransferase activity. Predicted to be involved in Mo-molybdopterin cofactor biosynthetic process; protein urmylation; and tRNA wobble position uridine thiolation. Predicted to be located in cytosol. Predicted to be active in cytoplasm. Is expressed in central nervous system; retina inner nuclear layer; retina layer; and retina outer nuclear layer. Orthologous to human MOCS3 (molybdenum cofactor synthesis 3).