Predicted to enable protein heterodimerization activity. Acts upstream of or within inner cell mass cell proliferation. Predicted to be located in nucleoplasm and perinuclear region of cytoplasm. Predicted to be part of transcription factor TFIID complex. Is expressed in several structures, including Harderian gland; brain; early conceptus; genitourinary system; and tongue. Orthologous to human TAF8 (TATA-box binding protein associated factor 8). [provided by Alliance of Genome Resources, Apr 2022]