11505
These data indicate that the SmSmad2 responds to the TGF - beta signals by interaction with receptor I , which phosphorylates it , whereupon it translocates into the nucleus presumably to regulate target gene transcription and consequently elicit a specific TGF - beta effect .
 SmSmad2, TGF - beta, receptor I, TGF - beta
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: GENE 
Text: {0} 
Answer:
 SmSmad2, TGF - beta, receptor I, TGF - beta