11205
Using as a probe cysteamine , an aminothiol compound with both antioxidant and antiproliferative activity , we have identified erk2 , a key element of the MAP kinase pathway, as being responsive to oxidative signalling during lymphocyte activation .
 ( protein: erk2, 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: erk2, None) 