Predicted to enable 5-formyltetrahydrofolate cyclo-ligase activity. Predicted to be involved in folic acid-containing compound biosynthetic process and tetrahydrofolate interconversion. Predicted to be active in mitochondrion. Is expressed in several structures, including alimentary system; genitourinary system; integumental system; nervous system; and sensory organ. Orthologous to human ST20-MTHFS (ST20-MTHFS readthrough). [provided by Alliance of Genome Resources, Apr 2022]