4361
In contrast, the cAMP -dependent protein kinase specific inhibitor H-89 totally inhibited HIV-1 LTR activity at a concentration as low as 100 nM without affecting cellular proliferation .
 ( DNA: HIV-1 LTR, None) , ( protein: cAMP -dependent protein kinase, 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:
 ( DNA: HIV-1 LTR, None) , ( protein: cAMP -dependent protein kinase, None) 