Fig. 3From: Torulene and torularhodin: “new” fungal carotenoids for industry?Proposed biosynthesis pathway of torulene and torularhodin in yeast cells from geranylgeranyl pyrophosphate (GGPP). Bifunctional lycopene cyclase/phytoene synthase encoded by crtYB gene, phytoene desaturase encoding gene crtI. Torularhodin is obtained in transformation of torulene, including hydroxylation and oxidation [26, 53, 54]Back to article page