3830
A series of mutations were constructed within the E2 open reading frame which delete various regions of the conserved DNA binding and transactivation domains as well as the internal hinge region .
 GENE: E2
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
Answer:
 GENE: E2