843
Binding of AP-2 prevented the subsequent binding of members of the CREB/ATF family to an adjacent regulatory motif in the 21 bp repeat .
 protein: AP-2; DNA: 21 bp repeat; DNA: adjacent regulatory motif; protein: CREB/ATF family
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: AP-2; DNA: 21 bp repeat; DNA: adjacent regulatory motif; protein: CREB/ATF family