10006
Cloning of the cDNA encoding human SR-BP shows an open reading frame for a 223-amino acid protein , which is homologous to the recently cloned sigma 1 receptor .
 ( protein: 223-amino acid protein, None) , ( protein: sigma 1 receptor, None) , ( protein: SR-BP, None) , ( DNA: open reading frame, None) , ( DNA: cDNA, None) , ( protein: human SR-BP, 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: 223-amino acid protein, None) , ( protein: sigma 1 receptor, None) , ( protein: SR-BP, None) , ( DNA: open reading frame, None) , ( DNA: cDNA, None) , ( protein: human SR-BP, None) 