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. Acts as a histone acetyltransferase involved in the light regulation of growth and gene expression. Required for H3K9, H3K27, and H4K12 acetylation on the target promoters. 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. Expressed in roots, shoots, leaves and inflorescences. Plants show reduced acetylation of histone H3 in light-responsive promoters, decreased chlorophyll accumulation and altered expression of about 9% of genes in young leaves. Belongs to the TAF1 family.