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The cAMP-response element CRE , TGACGTCA , present in the 21 base-pair sequence , appears to be essential for specific protein- TRE -DNA interactions because mutation of the two G 's destroys this complex.
 DNA: 21 base-pair sequence; DNA: CRE; DNA: cAMP-response element; DNA: TRE
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:
 DNA: 21 base-pair sequence; DNA: CRE; DNA: cAMP-response element; DNA: TRE