GTF2F2 Recombinant Monoclonal Antibody for Western Blot GTF2F2 is required for both basal and HIV-1 Tat-activated transcription. GTF2F2 synergizes with HIV-1 Tat and the cellular co-activator Tat-SF1 during Tat-mediated transactivation of the HIV-1 LTR p