8990
E2F - 6 shares significant homology with E2Fs 1 - 5 , especially within the DNA binding , heterodimerization and marked box domains .
 E2F - 6, E2Fs 1 - 5
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: GENE 
Text: {0} 
Answer:
 E2F - 6, E2Fs 1 - 5