STRUCTURAL BASIS OF TRANSCRIPTION ACTIVATION BY THE CYCLIN T1-TAT-TAR RNA COMPLEX FROM EIAV 2W2H RNA-BINDING PROTEIN, TAR, TAT, CYCLIN, NUCLEUS, ACTIVATOR, CYCLIN T1, HOST-VIRUS INTERACTION, TRANSCRIPTION REGULATION, CELL CYCLE, RNA-BINDING, ACETYLATION, COILED COIL, TRANSCRIPTION, CELL DIVISION, CRYSTALLIZATION