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. 2016 Mar 14;6:23057. doi: 10.1038/srep23057

Figure 4. Extracts from yeast strain BY-T20 cultures expressing the S. miltiorrhiza SmCPSent or/and SmKS using GC-MS.

Figure 4

(A) Construction of the recombinant plasmid in yeast strains. BY-T20: BY4742, ΔTrp1, Trp1::HIS3-PPGK1-BTS1/ERG20-TADH1-PTDH3-SaGGPS-TTPI1-PTEF1-tHMG1-TCYC1, SGH1: BY-T20/pESC-Trp::SmCPSent, SGH2: BY-T20/pESC-Trp::SmKS, SGH3: BY-T20/pESC-Trp::SmCPSent/SmKS, SGH4: BY-T20/pESC-Trp::SmKS-SmCPSent. (B) Extracted ion chromatograms showing the SmCPSent and SmKS products. AtCPS (ent-copalol, the dephosphorylated product of ent-CPP), AtCPS + AtKS (ent-kaurene). (C) The mass spectra of the SmCPSent and SmKS products. (D) Relative ent-kaurene contents in the yeast strains SGH3 and SGH4 based on their peak area ratio. The data represent the mean ± SD from three independent experiments.