4204
Furthermore, the effect of 12-O-tetradecanoyl phorbol 13-acetate and ionomycin , which synergized to fully activate c-Jun N-terminal kinase , was also sensitive to inhibition by forskolin .
 ( protein: c-Jun N-terminal kinase, 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: c-Jun N-terminal kinase, None) 