Predicted to enable DNA-binding transcription factor activity, RNA polymerase II-specific and RNA polymerase II cis-regulatory region sequence-specific DNA binding activity. Predicted to be involved in several processes, including mesoderm formation; regulation of transcription by RNA polymerase II; and somitogenesis. Predicted to act upstream of or within positive regulation of DNA-templated transcription. Predicted to be active in chromatin and nucleus. Is expressed in margin; mesoderm; notochord; tail bud; and ventral mesoderm. Human ortholog(s) of this gene implicated in neural tube defect. Orthologous to human TBXT (T-box transcription factor T).