Enables DNA-binding transcription activator activity, RNA polymerase II-specific and transcription cis-regulatory region binding activity. Involved in several processes, including adenohypophysis development; positive regulation of transcription by RNA polymerase II; and tissue regeneration. Located in nucleus. Human ortholog(s) of this gene implicated in breast cancer; nasal cavity cancer; and syndromic microphthalmia 3. Orthologous to human SOX2 (SRY-box transcription factor 2). [provided by Alliance of Genome Resources, Apr 2022]