931
A mutant LTR containing four base pair substitutions in the ets-1 binding site was constructed and was shown to have reduced binding in vitro.
 DNA: mutant LTR; protein: ets-1; DNA: ets-1 binding site
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: mutant LTR; protein: ets-1; DNA: ets-1 binding site