Is an ortholog of human MOCS2 (molybdenum cofactor synthesis 2)\; NMRK1 (nicotinamide riboside kinase 1)\; and NMRK2 (nicotinamide riboside kinase 2). Is predicted to have molybdopterin synthase activity. Human ortholog(s) of this gene are implicated in molybdenum cofactor deficiency type B.