15239
The kinase is hyperactivated due to a variety of mechanisms including loss of PTEN , mutations in the PI3K catalytic subunit , receptor tyrosine kinase and Ras activation .
 Chemical: tyrosine
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: tyrosine