   1.3.1.97 | gene SSL-3, recombinant expression of the enzyme in Nicotiana tabacum, ene constructs consisted of a peptide fusion of SSL-1 and SSL-3 connected by a triplet repeat peptide linker of Gly-Gly-Ser-Gly, with or without appending the C-terminal end (71 amino acids) of the Botryococcus braunii squalene synthase onto the C-terminus of SSL-3 and the FPS gene. The chimeric SSL1-3 genes and FPS gene are inserted downstream of the strong constitutive promoters Pcv and Pca, respectively. For trichome-specific expression of triterpene biosynthesis, the trichome-specific promoters Pcbt and Pcyp16 are fused to 5' end of botryococcene synthase gene, presqualene diphosphate synthase gene, and the FPS gene, respectively |
