106
The - 64 / - 37 region interacted with purified Sp1 and an unidentified protein ( s ) , proximal regulatory factor ( s ) I ( PRF - I ) .
 GENE: Sp1; GENE: proximal regulatory factor ( s ) I; GENE: PRF - I
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: Sp1; GENE: proximal regulatory factor ( s ) I; GENE: PRF - I