11939
Both MAP ERK kinase kinase-1 ( MEKK1 ) and Raf are activated strongly by FMLP , but minimally by PAF .
 ( protein: PAF, None) , ( protein: MEKK1, None) , ( protein: FMLP, None) , ( protein: MAP ERK kinase kinase-1, None) , ( protein: Raf, 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: PAF, None) , ( protein: MEKK1, None) , ( protein: FMLP, None) , ( protein: MAP ERK kinase kinase-1, None) , ( protein: Raf, None) 