Enables histone acetyltransferase binding activity. Acts upstream of or within intracellular estrogen receptor signaling pathway; regulation of transcription by RNA polymerase II; and transcription by RNA polymerase II. Located in cytoplasm and nucleus. Part of transcription factor TFIID complex. Is expressed in blastocyst; brain; genitourinary system; and tail. Orthologous to human TAF7 (TATA-box binding protein associated factor 7). [provided by Alliance of Genome Resources, Apr 2022]