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Wheat β-patchoulene synthase (TaPS) catalyzed β-patchoulene formation. (A) Gas chromatography-mass spectrometry (GC-MS) chromatogram of extract from the culture co-overexpressing TaPS and farnesyl diphosphate (FPP) synthase in E. coli. The empty vector (EV) control was also shown. The product β-patchoulene was labeled as peak 1 and the chemical structure was shown as well. (B) Mass spectrum of peak 1. The calculated retention index (RI) was shown.
