Fig. 4
From: Divergent camptothecin biosynthetic pathway in Ophiorrhiza pumila
STR assays from CPT-producing plants prove the validity of two parallel pathways in the plant kingdom. a OpSTR, CaSTR, and NnSTR activities towards secologanin. (i) CaSTR1, (ii) CaSTR2, (iii) CaSTR3, (iv) NnSTR, and (v) OpSTR. The dashed box indicates the expected elution time of the STR product strictosidine. b OpSTR, CaSTR, and NnSTR activities towards secologanic acid. (i) CaSTR1, (ii) CaSTR2, (iii) CaSTR3, (iv) NnSTR, and (v) OpSTR. The dashed box indicates the expected elution time of the STR product strictosidinic acid