Enables promoter-specific chromatin binding activity. Involved in positive regulation of gene expression. Acts upstream of or within several processes, including cranial suture morphogenesis; dentinogenesis; and osteoblast differentiation. Is expressed in several structures, including bone element; ectoderm; fin; head; and optic primordium. Human ortholog(s) of this gene implicated in osteogenesis imperfecta type 12. Orthologous to human SP7 (Sp7 transcription factor).