5714
The highly conserved ninth heptad , which is involved in heterodimerization , appears to participate in the receptor - inhibitor interaction , suggesting that the inhibitor is a related member of the receptor gene family .
 None
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
 Entities:  
Answer:
 None