1615
SM is a phosphoprotein in EBV -infected cells and can be phosphorylated in vitro with casein kinase II ( CKII ).
 ( protein: SM, None) , ( protein: CKII, None) , ( protein: phosphoprotein, None) , ( cell type: -infected cells, None) , ( protein: casein kinase II, 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: SM, None) , ( protein: CKII, None) , ( protein: phosphoprotein, None) , ( cell type: -infected cells, None) , ( protein: casein kinase II, None) 