Automated description from the Alliance of Genome Resources (Release 7.1.0)
Enables RNA polymerase II cis-regulatory region sequence-specific DNA binding activity. Involved in positive regulation of transcription by RNA polymerase II. Acts upstream of or within regulation of DNA-templated transcription. Located in nucleus. Part of Myc-Max complex. Is expressed in several structures, including central nervous system; early conceptus; genitourinary system; lens; and upper jaw. Human ortholog(s) of this gene implicated in lung small cell carcinoma and pheochromocytoma. Orthologous to human MAX (MYC associated factor X).