1.1.1.191	hydroxymethylindole	42% activation at 0.2 mM	
1.1.1.191	indole-3-acetic acid	activation up to 0.05 mM	
1.1.1.191	indole-3-ethanol	activation up to 0.1 mM	
1.1.1.191	NaCl	activation up to 0.1 M