7675
A cdk2 inhibitor , Olomoucine , as well as a dominant-negative cdk2 construct prevented HLA class I -mediated inactivation of Rb ; in contrast, dominant-negative cdk4 and cdk6 constructs had no effect.
 ( protein: Rb, None) , ( DNA: dominant-negative cdk2 construct, None) , ( protein: HLA class I, 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: Rb, None) , ( DNA: dominant-negative cdk2 construct, None) , ( protein: HLA class I, None) 