7806
Cleavage of transcription factor SP1 by caspases during anti-IgM-induced B-cell apoptosis .
 ( protein: SP1, None) , ( protein: caspases, None) , ( protein: transcription factor, None) , ( cell type: B-cell, 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: SP1, None) , ( protein: caspases, None) , ( protein: transcription factor, None) , ( cell type: B-cell, None) 