camptotheca/reductase

We have isolated a mutant lacking 3-hydroxy-3-methylglutaryl CoA (HMG-CoA) reductase activity from a terpenoid antibiotic (terpentecin) producer, Streptomyces griseolosporeus MF730-N6, which uses both the mevalonate and nonmevalonate pathways for the formation of isopentenyl diphosphate, by

We have isolated a gene, hmg1, for 3-hydroxy-3-methylglutaryl coenzyme A reductase (HMGR) from Camptotheca acuminata, a Chinese tree that produces the anti-cancer monoterpenoid indole alkaloid camptothecin (CPT). HMGR supplies mevalonate for the synthesis of the terpenoid component of CPT as well as

Camptothecin is an anti-cancer monoterpene indole alkaloid. The gene encoding 1-hydroxy-2-methyl-2-(E)-butenyl 4-diphosphate reductase (designated as CaHDR), the last catalytic enzyme of the MEP pathway for terpenoid biosynthesis, was isolated from camptothecin-producing Camptotheca acuminata. The

Camptotheca acuminata is a Chinese tree that produces the anti-cancer monoterpenoid indole alkaloid camptothecin (CPT). 3-hydroxy-3-methylglutaryl coenzyme A reductase (HMGR) supplies mevalonate for the terpenoid moiety of CPT and its hydroxylated derivative 10-hydroxycamptothecin (10-OH-CPT). We

Cytochrome P450 monooxygenases (CYP450s) and their auxiliary cytochrome P450 reductases (CPRs) are important and commonly involved in the biosynthesis of camptothecin (CPT). To better understand the possible functions of CPRs in planta, we first isolated two CaCPRs genes from Camptotheca acuminata.

Secondary metabolite accumulation and nitric oxide (NO) generation are two common responses of plant cells to fungal elicitors, and NO has been reported to play important roles in elicitor-induced secondary metabolite production. However, the source of elicitor-triggered NO generation in plant cells

Camptothecin (CAM), a complex pentacyclic pyrroloqinoline alkaloid, is the starting material for CAM-type drugs that are well-known antitumor plant drugs. Although many chemical and biological research efforts have been performed to produce CAM, a few attempts have been made to uncover the enzymatic