11857
Cotransfection with a transdominant negative mutant of the NF-YA subunit abolishes the transcriptional activation by heme , indicating that NF-Y plays an essential role in this activation.
 ( protein: transdominant negative mutant, None) , ( protein: NF-YA subunit, None) , ( protein: NF-Y, None) , ( protein: heme, 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: transdominant negative mutant, None) , ( protein: NF-YA subunit, None) , ( protein: NF-Y, None) , ( protein: heme, None) 