TFIID is a multimeric protein complex that plays a central role in mediating promoter responses to various activators and repressors. Belongs to the TFIID complex which is composed of TATA binding protein (Tbp) and a number of TBP-associated factors (TAFs). The N-terminus interacts with the histone fold of Taf8. At embryonic stage 9, expression is seen in the mesodermal layer and midgut primordia. The mesoderm-specific expression persists in later stages of development and at its highest level is detected in midgut, hindgut, and differentiating somatic muscle fibers. Coexpressed with Taf10 in the lateral epidermis and anal plate. Expressed both maternally and zygotically throughout development. Belongs to the TAF10 family.