11108
The regulatory Tat protein of the human immunodeficiency virus type-1 ( HIV-1 ) is essential for viral replication and also shows pleiotropic activities on various cell functions .
 ( protein: regulatory Tat protein, 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:
 ( protein: regulatory Tat protein, None) 