4021
CsA and FK506 associate with intracellular binding proteins (i.e., CsA with cyclophilin A and FK506 with FKBP12 ) to form protein/drug complexes that suppress the immune system by preventing activation of T cells in response to antigen presentation .
 ( protein: intracellular binding proteins, None) , ( protein: cyclophilin A, None) , ( protein: FKBP12, None) , ( cell type: T cells, 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: intracellular binding proteins, None) , ( protein: cyclophilin A, None) , ( protein: FKBP12, None) , ( cell type: T cells, None) 