1182
In contrast, this receptor mutant showed low levels of xenobiotic response element-binding activity , indicating that the PAS domain may be important for DNA-binding affinity and/or specificity of the receptor.
 ( protein: PAS domain, 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: PAS domain, None) 