minimal PKS, octaketide minimal PKS, otc PKS, oxy, OxyA, oxyABC, OxyB, OxyC, oxytetracycline PKS, oxytetracycline polyketide synthase, type II minimal polyketide synthase, type II PKS
EC Number
2.3.1.260
CAS Registry Number
Comments
The synthesis, in the bacterium Streptomyces rimosus of the tetracycline antibiotics core skeleton requires a minimal polyketide synthase (PKS) consisting of a ketosynthase (KS), a chain length factor (CLF), and an acyl-carrier protein (ACP). Initiation involves an amide-containing starter unit that becomes the C-2 amide that is present in the tetracycline compounds. Following the initiation, the PKS catalyses the iterative condensation of 8 malonyl-CoA molecules to yield the polyketide backbone of tetracycline. Throughout the proccess, the nascent chain is attached to the OxyC acyl-carrier protein.
