The mechanism of HIV Tat-TAR complex Activated TFIih phosphorylates CTD of Rna pol ll RN内 Polymerase H→cTDp Cellular factor Tat-Tar cellular factor complex activates TFIIHTat Cellular factor RNA Polymerase H CTD CTD p The mechanism of HIV Tat-TAR complex Tat-Tar cellular factor complex activates TFIIH Activated TFIIH phosphorylates CTD of RNA pol II