6027
Ligand - induced BRET changes assessing G beta gamma - Kir3 . 1 subunit interaction 1 ) followed similar kinetics to those monitoring the G alpha oA - G beta gamma interface , 2 ) displayed the same order of efficacy as those observed at the DOR - G beta gamma interface , 3 ) were sensitive to pertussis toxin , and 4 ) were predictive of whether a ligand could evoke channel currents .
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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