Enables DNA-binding transcription activator activity, RNA polymerase II-specific and double-stranded DNA binding activity. Involved in central nervous system development; positive regulation of neuron differentiation; and regulation of transcription, DNA-templated. Located in cytoplasm and nucleus. Human ortholog(s) of this gene implicated in congenital malabsorptive diarrhea 4; glucose intolerance; and type 2 diabetes mellitus. Orthologous to human NEUROG3 (neurogenin 3). [provided by Alliance of Genome Resources, Apr 2022]