11070
Human T cell lymphotropic virus type I ( HTLV-I ) encodes the transactivator protein , Tax , which facilitates viral transcription from three 21 bp repeated elements within the U3 region of the long terminal repeat ( LTR ).
 ( DNA: LTR, None) , ( protein: transactivator protein, None) , ( DNA: 21 bp repeated elements, None) , ( DNA: U3 region, None) , ( protein: Tax, None) , ( DNA: 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) , ( protein: transactivator protein, None) , ( DNA: 21 bp repeated elements, None) , ( DNA: U3 region, None) , ( protein: Tax, None) , ( DNA: long terminal repeat, None) 