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). E(y)1 and Taf6 exist as a heterotetramer. Interacts with Taf1. Belongs to the TAF6 family.