TAFs are components of the transcription factor IID (TFIID) complex that are essential for mediating regulation of RNA polymerase transcription. Regulates the genes involved in ubiquitin-dependent proteolysis during the progression of M-phase of mitosis. Component of the TFIID and SAGA complexes. TFIID is composed of TATA binding protein (TBP) and a number of TBP-associated factors (TAFs) whose MWs range from 25-150 kDa (By similarity). Interacts with gcn5. Interacts (via C-terminal WD repeat-containing region) with taf6. Belongs to the WD repeat TAF5 family.