TAFs are components of the transcription factor IID (TFIID) complex that is essential for mediating regulation of RNA polymerase transcription. Core scaffold of the TFIID complex (By similarity). Component of the TFIID complex. TFIID is composed of TATA binding protein (TBP) and a number of TBP-associated factors (TAFs) whose MWs range from 14-217 kDa. Interacts with TAF7 and TAF14B, and (via N-terminus) with TBP1 and TBP2. Expressed in roots, leaves and inflorescences. Belongs to the TAF1 family.