3219
Octamer recognition is mediated by the POU domain , a conserved structural motif which - - like the zinc finger and leucine zipper - - defines a family of related transcription factors .
 GENE: POU
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: POU