Enables DNA-binding transcription activator activity, RNA polymerase II-specific and 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 several processes, including animal organ development; cellular response to retinoic acid; and hippo signaling. Located in nucleus. Part of transcription regulator complex. Is expressed in several structures, including central nervous system; early conceptus; genitourinary system; musculature; and tooth. Human ortholog(s) of this gene implicated in Sveinsson chorioretinal atrophy. Orthologous to human TEAD1 (TEA domain transcription factor 1). [provided by Alliance of Genome Resources, Apr 2022]