Enables folic acid binding activity. Contributes to uroporphyrinogen-III synthase activity. Involved in several processes, including cellular response to amine stimulus; response to platinum ion; and uroporphyrinogen III biosynthetic process. Located in cytosol. Used to study cutaneous porphyria. Human ortholog(s) of this gene implicated in cutaneous porphyria. Orthologous to human UROS (uroporphyrinogen III synthase). [provided by Alliance of Genome Resources, Apr 2022]