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Whereas different anti-CD4 mAb or HIV-1 gp120 could all trigger activation of the protein tyrosine kinases p56lck and p59fyn and phosphorylation of the Shc adaptor protein , which mediates signals to Ras , they differed significantly in their ability to activate NF-AT .
 ( protein: Ras, None) , ( protein: anti-CD4 mAb, None) , ( protein: NF-AT, None) , ( protein: HIV-1 gp120, None) , ( protein: Shc adaptor protein, None) , ( protein: protein tyrosine kinases, None) , ( protein: p59fyn, None) , ( protein: p56lck, 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: Ras, None) , ( protein: anti-CD4 mAb, None) , ( protein: NF-AT, None) , ( protein: HIV-1 gp120, None) , ( protein: Shc adaptor protein, None) , ( protein: protein tyrosine kinases, None) , ( protein: p59fyn, None) , ( protein: p56lck, None) 