Predicted to enable phosphoribosylformylglycinamidine synthase activity. Acts upstream of or within anterior head development. Predicted to be located in cytoplasm. Is expressed in several structures, including alimentary system; central nervous system; cranium; integumental system; and liver. Orthologous to human PFAS (phosphoribosylformylglycinamidine synthase). [provided by Alliance of Genome Resources, Apr 2022]