Basal machinery that positions pol II at core promoter: TFIIA/B/D/E/F/H assemble sequentially. TFIID contains TBP (TATA-binding protein) + TAFs; TFIIH has CDK7 + XPB/D helicases.
Basal machinery that positions pol II at core promoter: TFIIA/B/D/E/F/H assemble sequentially. TFIID contains TBP (TATA-binding protein) + TAFs; TFIIH has CDK7 + XPB/D helicases.