23020
In the absence of nucleotide , the enzyme is mostly open , whereas in the presence of DNA and a correctly base - pairing dNTP it re - equilibrates to a closed state .
 Chemical: nucleotide; Chemical: dNTP
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: nucleotide; Chemical: dNTP