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. 2022 Jul 6;607(7919):617–622. doi: 10.1038/s41586-022-04950-4

Fig. 1. The proposed biosynthesis pathway for strychnine and brucine.

Fig. 1

The partial biosynthetic pathway was predicted on the basis of previous radioisotopic feeding experiments. OPP, pyrophosphate; GPP, geranyl pyrophosphate.