The recombinant S. cerevisiae T73-63 was used throughout this study [21], and
it was derived from the wine yeast strain T73-4 (MATa; ura3-52) by transformation
with the integration vectors YIplac211YB/I/E*(11,579 bp). This plasmid carries
the carotenoid biosynthesis genes including the gene crtYB (encodes a bifunctional
phytoene synthase and lycopene cyclase), crtI (phytoene desaturase) and crtE (heterologous
GGPP synthase) cloned from X. dendrorhous [13]. The expressions of the
three genes were driven by the S. cerevisiae GPD strong constitutive promoter and
the CYC1 terminator. The synthetic must medium described by Ivorra et al. [27] was
used in this study and contains 20% (w/v) glucose, 0.5% KH2PO4, 0.2% (NH4)2SO4,
0.04% MgSO4·7H2O and 0.1% yeast extract.
The recombinant S. cerevisiae T73-63 was used throughout this study [21], andit was derived from the wine yeast strain T73-4 (MATa; ura3-52) by transformationwith the integration vectors YIplac211YB/I/E*(11,579 bp). This plasmid carriesthe carotenoid biosynthesis genes including the gene crtYB (encodes a bifunctionalphytoene synthase and lycopene cyclase), crtI (phytoene desaturase) and crtE (heterologousGGPP synthase) cloned from X. dendrorhous [13]. The expressions of thethree genes were driven by the S. cerevisiae GPD strong constitutive promoter andthe CYC1 terminator. The synthetic must medium described by Ivorra et al. [27] wasused in this study and contains 20% (w/v) glucose, 0.5% KH2PO4, 0.2% (NH4)2SO4,0.04% MgSO4·7H2O and 0.1% yeast extract.
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