The plasmids pBAD-(His6)miRFP670 (Addgene no. 79984),29 (link) pBAD-(His6)miRFP709 (Addgene no. 79986),29 (link) and pWA PAS-E BAD K-GAFm (Addgene no. 39866)25 (link) were gifts from Vladislav Verkhusha. All plasmids were verified by DNA sequencing.