Enables DNA-binding transcription activator activity, RNA polymerase II-specific and transcription cis-regulatory region binding activity. Involved in several processes, including negative regulation of transcription regulatory region DNA binding activity; neurogenesis; and positive regulation of transcription by RNA polymerase II. Located in nucleus. Human ortholog(s) of this gene implicated in Coffin-Siris syndrome 9. Orthologous to human SOX11 (SRY-box transcription factor 11). [provided by Alliance of Genome Resources, Apr 2022]