11951
The putative promoter area is similar to those of several other myeloid-cell-specific genes in that it contains no TATAAA box but has a number of purine-rich stretches with multiple sites for the factors of the Ets family of transcriptional regulators .
 ( DNA: purine-rich stretches, None) , ( protein: Ets family, None) , ( protein: transcriptional regulators, None) , ( DNA: TATAAA box, 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: purine-rich stretches, None) , ( protein: Ets family, None) , ( protein: transcriptional regulators, None) , ( DNA: TATAAA box, None) 