7715
The novel Ets protein was most closely related to PU.1 and Spi-B within the DNA binding Ets domain and was therefore named Spi-C .
 ( protein: Spi-B, None) , ( protein: PU.1, None) , ( protein: Ets protein, None) , ( protein: Spi-C, None) , ( DNA: DNA binding Ets domain, 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: Spi-B, None) , ( protein: PU.1, None) , ( protein: Ets protein, None) , ( protein: Spi-C, None) , ( DNA: DNA binding Ets domain, None) 