7735
Shc stimulates Ras / mitogen - activated protein kinase ( MAPK ) through forming a complex with Grb2 at the phosphorylated tyrosine ( Y ) residue 317 .
 Shc, Ras, mitogen - activated protein kinase, MAPK, Grb2
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: GENE 
Text: {0} 
Answer:
 Shc, Ras, mitogen - activated protein kinase, MAPK, Grb2