3019
The carboxyl portion of Sp140 contained a zinc-finger domain and a bromodomain , motifs that are present in proteins regulating gene transcription .
 ( protein: carboxyl portion, None) , ( protein: Sp140, None) , ( protein: bromodomain, None) , ( protein: zinc-finger domain, 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: carboxyl portion, None) , ( protein: Sp140, None) , ( protein: bromodomain, None) , ( protein: zinc-finger domain, None) 