2492
In silico analyses also supported the results of CAR - SRC1 interaction ; there is little structural difference in the ligand - binding pocket of bsCAR and mCAR , but there is a distinct discrimination in the helix 11 and 12 of these receptors , suggesting that the interaction of ligand - bound CAR and SRC1 is critical for determining species - specific and ligand - dependent transactivation over the basal activity .
 None
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 None