Figure 1 | Scientific Reports

Figure 1

From: An Intronless β-amyrin Synthase Gene is More Efficient in Oleanolic Acid Accumulation than its Paralog in Gentiana straminea

Figure 1

(A) Early steps in biosynthesis of phytosterols and triterpenoid saponins leading to the common precursor 2, 3-oxidosqualene. HMG-CoA: 3-hydroxy-3-methylglutaryl-CoA, IPP: Isopentenyl pyrophosphate, DMPP: dimethylallyl pyrophosphate, GPP: geranyl pyrophosphate, FPP: farnesyl pyrophosphate. HMGS: 3-hydroxy-3-methylglutaryl-CoA synthase, HMGR: 3-hydroxy-3-methylglutaryl-CoA reductase, IPPI: IPP isomerase, GPPS: geranyl diphosphate synthase, FPS: farnesyl diphosphate synthase, SS: squalene synthase, SE: squalene epoxidase. (B) The biosynthetic pathway of (3S)-2, 3-oxidosqualene into phytosteol andtriterpene via cycloartenol and β-amyrin.

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