14695
Site-directed mutagenesis further demonstrated that the enhancer function of one of the two NF-E2/AP1 motifs of HS-40 is mediated through its binding to NF-E2 but not AP1 transcription factor .
 DNA: enhancer; protein: AP1 transcription factor; DNA: HS-40; protein: NF-E2
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
 Entities: enhancer, AP1 transcription factor, HS-40, NF-E2 
Answer:
 DNA: enhancer; protein: AP1 transcription factor; DNA: HS-40; protein: NF-E2