437
Using a cell line that is stably transfected with a trimer of the NFAT -1 regulatory element linked to a lac-Z reporter gene , we screened for inhibitors of NFAT -1-mediated beta-galactosidase activity .
 ( protein: NFAT, None) , ( protein: beta-galactosidase, None) , ( protein: NFAT, None) , ( DNA: lac-Z reporter gene, None) , ( DNA: NFAT -1 regulatory element, 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: NFAT, None) , ( protein: beta-galactosidase, None) , ( protein: NFAT, None) , ( DNA: lac-Z reporter gene, None) , ( DNA: NFAT -1 regulatory element, None) 