9962
ATF1 and CREB trans-activate a cell cycle regulated histone H4 gene at a distal nuclear matrix associated promoter element .
 ( protein: histone H4, None) , ( protein: CREB, None) , ( protein: ATF1, None) , ( DNA: cell cycle regulated histone H4 gene, None) , ( DNA: distal nuclear matrix associated promoter 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: histone H4, None) , ( protein: CREB, None) , ( protein: ATF1, None) , ( DNA: cell cycle regulated histone H4 gene, None) , ( DNA: distal nuclear matrix associated promoter element, None) 