Enables sequence-specific DNA binding activity. Involved in regulation of transcription by RNA polymerase II and spermatogenesis. Acts upstream of or within several processes, including cellular glucose homeostasis; hematopoietic stem cell homeostasis; and positive regulation of transcription by RNA polymerase II. Located in nucleus. Is expressed in several structures, including central nervous system; embryo mesenchyme; genitourinary system; gut; and skeleton. Orthologous to human FOXA3 (forkhead box A3). [provided by Alliance of Genome Resources, Apr 2022]