10790
Human immunodeficiency virus type 1 (HIV-1) Tat , an early regulatory protein that is critical for viral gene expression and replication , transactivates the HIV-1 long terminal repeat ( LTR ) via its binding to the transactivation response element ( TAR ) and, along with other cellular factors, increases viral transcription initiation and elongation .
 ( DNA: LTR, None) , ( DNA: transactivation response element, None) , ( DNA: TAR, None) , ( protein: Human immunodeficiency virus type 1 (HIV-1) Tat, None) , ( protein: regulatory protein, None) , ( DNA: HIV-1 long terminal repeat, None) 
Locate the role in the text that participated in the event based on the event type and return it in the event list. 
 Option: Event type: RNA,cell type,protein,cell line,DNA, Arguments type: . 
Text: {0} 
Answer:
 ( DNA: LTR, None) , ( DNA: transactivation response element, None) , ( DNA: TAR, None) , ( protein: Human immunodeficiency virus type 1 (HIV-1) Tat, None) , ( protein: regulatory protein, None) , ( DNA: HIV-1 long terminal repeat, None) 