Transcription factor that binds to the DNA sequence 5'-AACAAT-3' (PubMed:9332350). Acts as a transcriptional activator (By similarity). Plays a role together with nlk in neural induction during early embryogenesis (PubMed:12047350). Interacts with nlk.2. Expressed in unfertilized eggs but not in early embryos up to stage 13. Localized to the nervous system at the end of neurulation, and restricted to the central nervous system, eye and head neural crest cells by the early tadpole stages. In adults, expressed throughout the ovary, and also in the testis, kidney, brain and small intestine. Expressed both maternally and zygotically. By chrd.