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In the DRA promoter , one of these cis-acting regulatory motifs is the X2-box to which nuclear factor X2 ( NF-X2 ) binds.
 protein: nuclear factor X2; DNA: DRA promoter; DNA: cis-acting regulatory motifs; protein: NF-X2; DNA: X2-box
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
Answer:
 protein: nuclear factor X2; DNA: DRA promoter; DNA: cis-acting regulatory motifs; protein: NF-X2; DNA: X2-box