11157
In several cell lines , mTOR or its downstream targets can be regulated by phosphatidylinositol ( PI ) 3 - kinase ; protein kinases A , B , and C ; heterotrimeric G - proteins ; a PD98059 - sensitive kinase or calcium ; as well as by amino acids .
 mTOR, phosphatidylinositol ( PI ) 3 - kinase, protein kinases A , B , and C, heterotrimeric G - proteins
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: GENE 
Text: {0} 
Answer:
 mTOR, phosphatidylinositol ( PI ) 3 - kinase, protein kinases A , B , and C, heterotrimeric G - proteins