4.6.1.12 physiological function involved in terpenoid metabolism 706809 4.6.1.12 physiological function is involved in the taxol precursor biosynthesis. Escherichia coli harboring both of the plasmids, pAC-BETA and pTrc or pTrcTmMECPS or pTrcAtMECPS can grow well, while Escherichia coli without exogenous plasmid or harboring either of the plasmids can not grow 709487 4.6.1.12 physiological function the enzyme contributes to the production of primary (chlorophylls and carotenoids) isoprenoid end-products in chloroplasts 730270