Automated description from the Alliance of Genome Resources (Release 7.0.0)
Enables DNA-binding transcription activator activity, RNA polymerase II-specific and RNA polymerase II cis-regulatory region sequence-specific DNA binding activity. Involved in heart development and positive regulation of gap junction assembly. Acts upstream of with a positive effect on bundle of His cell to Purkinje myocyte communication by electrical coupling; cell-cell signaling involved in cardiac conduction; and regulation of atrial cardiac muscle cell membrane depolarization. Acts upstream of or within several processes, including embryonic forelimb morphogenesis; heart development; and positive regulation of cell population proliferation. Located in nucleus. Part of transcription regulator complex. Is expressed in several structures, including embryo mesenchyme; eye; genitourinary system; heart; and vena cava. Used to study Holt-Oram syndrome. Human ortholog(s) of this gene implicated in Holt-Oram syndrome. Orthologous to human TBX5 (T-box transcription factor 5).