7572
Moreover, we confirmed that the ectopic expressions of Smad6 and Smad7 inhibited the hBMP-2 -induced Smad1/Smad5 phosphorylation .
 ( protein: Smad7, None) , ( protein: hBMP-2, None) , ( protein: Smad6, None) , ( protein: Smad1/Smad5, None) 
Locate the role in the text that participated in the event based on the event type and return it in the event list. 
 Option: Event type: RNA,cell type,protein,cell line,DNA, Arguments type: . 
Text: {0} 
Answer:
 ( protein: Smad7, None) , ( protein: hBMP-2, None) , ( protein: Smad6, None) , ( protein: Smad1/Smad5, None) 