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MIP1 alpha nuclear protein ( MNP ), a novel transcription factor expressed in hematopoietic cells that is crucial for transcription of the human MIP-1 alpha gene .
 ( protein: MIP1 alpha nuclear protein, None) , ( protein: MNP, None) , ( protein: transcription factor, None) , ( DNA: human MIP-1 alpha gene, 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: MIP1 alpha nuclear protein, None) , ( protein: MNP, None) , ( protein: transcription factor, None) , ( DNA: human MIP-1 alpha gene, None) 