1835
An NMR model is obtained from Oct-2 , a human B-cell specific transcription factor which participates in the regulation of immunoglobulin genes .
 ( protein: Oct-2, None) , ( protein: human B-cell specific transcription factor, None) , ( DNA: immunoglobulin genes, 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: Oct-2, None) , ( protein: human B-cell specific transcription factor, None) , ( DNA: immunoglobulin genes, None) 