Immunogen sequence: YKPVANHQYN IEYERKKKED GKRARADKQH VLDMLFSAFE KHQYYNLKDL VDITKQPVVY LKEILKEIGV QNVKGIHKNT WELKPEYRHY QGEEK. GTF2F2 is required for both basal and HIV-1 Tat-activated transcription. GTF2F2 synergizes with HIV-1 Tat and the cellular co-ac