5040
To achieve a better understanding of the mechanism of transactivation by Tax of human T-cell leukemia virus type 1 Tax -responsive element 1 ( TRE-1 ), we developed a genetic approach with Saccharomyces cerevisiae .
 ( DNA: Tax -responsive element 1, None) , ( DNA: TRE-1, None) , ( protein: Tax, None) , ( protein: Tax, 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: Tax -responsive element 1, None) , ( DNA: TRE-1, None) , ( protein: Tax, None) , ( protein: Tax, None) 