8290
Interaction between immunoglobulin-like transcript-2/leukocyte Ig-like receptor 1 on NKL cells and HLA-B27 on target cells leads to an impairment of NKL natural cytotoxicity , which correlates with an absence of JunB , FosB , and c-Fos transcription , as well as an absence of their DNA-binding activity .
 ( protein: DNA-binding activity, None) , ( cell type: target cells, None) , ( cell type: NKL cells, None) , ( protein: immunoglobulin-like transcript-2/leukocyte Ig-like receptor 1, None) , ( protein: HLA-B27, 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: DNA-binding activity, None) , ( cell type: target cells, None) , ( cell type: NKL cells, None) , ( protein: immunoglobulin-like transcript-2/leukocyte Ig-like receptor 1, None) , ( protein: HLA-B27, None) 