Enables DNA-binding transcription activator activity, RNA polymerase II-specific; RNA polymerase II cis-regulatory region sequence-specific DNA binding activity; and chromatin binding activity. Involved in positive regulation of transcription by RNA polymerase II. Acts upstream of or within several processes, including blood circulation; megakaryocyte development; and regulation of transcription, DNA-templated. Located in nucleus. Is expressed in several structures, including alimentary system; branchial arch; cardiovascular system; genitourinary system; and nervous system. Used to study systemic scleroderma. Human ortholog(s) of this gene implicated in blood platelet disease and thrombocytopenia. Orthologous to human FLI1 (Fli-1 proto-oncogene, ETS transcription factor). [provided by Alliance of Genome Resources, Apr 2022]