5453
Recombinant c-Jun and c-Fos were ubiquitinylated by the ubiquitin carrier enzymes E214K , E220K , or E232K in the presence of the ubiquitin-activating enzyme , E1 .
 ( protein: c-Jun, None) , ( protein: ubiquitin-activating enzyme, None) , ( protein: c-Fos, None) , ( protein: ubiquitin carrier enzymes, None) , ( protein: E220K, None) , ( protein: E1, None) , ( protein: E232K, None) , ( protein: E214K, 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, None) , ( protein: ubiquitin-activating enzyme, None) , ( protein: c-Fos, None) , ( protein: ubiquitin carrier enzymes, None) , ( protein: E220K, None) , ( protein: E1, None) , ( protein: E232K, None) , ( protein: E214K, None) 