13930
In addition, transcriptional activity of IL-2 and metallothionein enhancer and promoter regions and transcription factors AP-1 , NF-kappaB , and NF-AT were analyzed by chloramphenicol acetyltransferase ( CAT ) and electrophoretic mobility shift assays , respectively.
 ( protein: NF-kappaB, None) , ( protein: transcription factors, None) , ( protein: IL-2, None) , ( protein: chloramphenicol acetyltransferase, None) , ( protein: AP-1, None) , ( protein: NF-AT, None) , ( protein: CAT, 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: NF-kappaB, None) , ( protein: transcription factors, None) , ( protein: IL-2, None) , ( protein: chloramphenicol acetyltransferase, None) , ( protein: AP-1, None) , ( protein: NF-AT, None) , ( protein: CAT, None) 