541
The protooncogene p21ras , a monomeric G protein family member , plays a critical role in converting extracellular signals into intracellular biochemical events .
 ( DNA: protooncogene p21ras, None) , ( protein: monomeric G protein family member, 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: protooncogene p21ras, None) , ( protein: monomeric G protein family member, None) 