Fig. 14From: Functional identification of BpMYB21 and BpMYB61 transcription factors responding to MeJA and SA in birch triterpenoid synthesisSelf-activation detection of pHis2-element recombinant vectors. Transcriptional autoactivation of Y187 recombinant yeast for element No.1 and No.4 was screened on SD/−His/−Trp (DDO) medium with the inhibitor 3-amino-1, 2,4-triazole (3-AT) at 0–100 mMBack to article page