8558
Structural and evolutionary studies on sterol 14 - demethylase P450 ( CYP51 ) , the most conserved P450 monooxygenase : I .
 sterol 14 - demethylase P450, CYP51, P450 monooxygenase
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: GENE 
Text: {0} 
Answer:
 sterol 14 - demethylase P450, CYP51, P450 monooxygenase