4991
RNA polymerase bound to the + 10A promoter partially protects a 20 base - pair sequence from DNase I digestion upstream of the start site .
 RNA polymerase, DNase I
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: GENE 
Text: {0} 
Answer:
 RNA polymerase, DNase I